Upper Limb and Back: Most Frequently Tagged Lists with Annotation - Andrea Conway et. al. (2006)

1. anterior interosseous artery

• Branch of common interosseous artery
• Passes down the forearm on the volar (palmar) surface of the interosseous membrane
• Arterial supply to flexor pollicis longus muscle, flexor digitorum profundus muscle, pronator quadratus muscle, radius, ulna, carpal bones
• Pierces the interosseous membrane at its distal end (at the upper border of pronator quadratus) to reach the dorsal carpal anastomosis

2. superficial/deep ulnar nerve

• Lies in a groove posterior to the medial epicondyle, where it can be felt against the "funny bone"
• Enters the forearm between the to heads of flexor carpi ulnaris, then shortly joins the ulnar artery, then becomes superficial
• lies between the flexor digitorum superficialis laterally and the flexor carpi ulnaris medially
• Nerve and artery enter the hand by passing anterior to the flexor retinaculum, lateral to the pisiform, and between bone and hook of the hamate
• Source is the medial cord of the brachial plexus (C8, T1)
• Motor to: flexor carpi ulnaris muscle, flexor digitorum profundus muscle (ulnar half), abductor digiti minimi muscle, flexor digiti minimi brevis muscle., opponens digiti minimi muscle., ulnar 2 lumbrical muscle, and palmar and dorsal interosseous muscles.
• Sensory to: skin of the medial side of the wrist and hand; skin of the medial 1.5 digits

3. posterior cord of brachial plexus

• An arrangement of nerve fibers (a plexus. . .duh) running from the spine of vertebrae C5-T1 through the neck and axilla and into the arm; all nerves of the arm stem from the brachial plexus (exception: the intercostobrachialis nerve which supplies an area of skin near the axilla)
• The posterior cord is formed from the three posterior divisions of the trunks
• Nerves from the posterior cord:
  • upper subscapular nerve (C5, C6) supplies subscapularis
  • thoracodorsal nerve (C6, C7, C8) supplies latissimus dorsi
  • lower subscapular nerve (C5, C6) supplies lower part of subscapularis and teres major
  • axillary nerve (C5, C6) anterior branch supplies deltoid and small area overlying skin, posterior branch supplies teres minor and deltoid muscles and then becomes upper lateral cutaneous nerve of the arm
  • radial nerve (largest in plexus, C5, C6, C7, C8, T1) supplies triceps brachii, skin of posterior arm as posterior cutaneous nerve of arm, anconeus, and extensor muscles of the forearm

4. median nerve

• Source is the lateral and medial cords of the brachial plexus, then courses with brachial artery on medial side of arm between biceps brachii and brachialis.
• At first, is lateral to the artery, then crosses it anteriorly to run medial to the artery in the distal arm and into the cubital fossa
• Enters the hand throug the carpal tunnel, deep to the flexor retinaculum
• Branches include: anterior interosseous nerve, palmar branch, recurrent (motor) branch, common palmar digital nerves (for digits 1-3)
• Motor supply to: pronator teres muscle, flexor carpi radialis muscle, palmaris longus muscle, flexor digitorum superficialis muscle, flexor digitorum profundus muscle (radial half), flexor pollicis longus muscle, pronator quadratus muscle, abductor pollicis brevis muscle, flexor pollicis brevis muscle, opponens pollicis muscle, lateral 2 lumbrical muscle
• Sensory supply to: skin of the radial half of the palm and the palmar side of the lateral 3 1/2 digits (and the nail bed for these digits)
• Is motor to the flexor muscles of the forearm, except flexor carpi ulnaris and the medial 1/2 of the flexor digitorum profundus, and the muscles of the thenar compartment and the lateral 2 lumbricals

5. suprascapular nerve

• Source is the superior trunk of the brachial plexus (C5-C6)
• Motor supply to: supraspinatus muscle and infraspinatus muscle
• No cutaneous branches
• Runs laterally beneath the trapezius and omohyoideus
• Passes through the suprascapular notch inferior to the superior transverse scapular ligament
• Then passes beneath the supraspinatus muscle and curves around the lateral border of the spine of the scapula to the infraspinatus muscle

6. coracoclavicular ligament

• Serves to connect the clavicle with the coracoid process of the scapula
• Reinforces the acromioclavicular joint
• Consists of to parts: trapezoid and conoid ligaments
  • Trapezoid: Quadrangular in shape; attached to the coracoid process for about 1 inch, and runs upward and laterally to attach to trapezoid line on inferior surface of clavicle
  • Conoid: Cone-shaped; lies partly behind the trapezoid ligament; apex is attached to the knuckle of coracoid process and the base to the conoid tubercle on undersurface of clavicle

7. coracoacromial ligament

• Strong triangular band extending between the coracoid process and the acromion
• Attached by its apex to the summit of the acromion in front of articular surface of clavicle and by its base to the whole length of lateral border of coracoid process
• This ligament, together with coracoid process and acromion, forms protection for the head of the humerus

8. 1st dorsal interosseous muscle

• Originates on the radial side of the second metacarpal and proximal half of the ulnar side of the first metacarpal
• Inserts on the radial side of the of the base of the second proximal phalanx and the extensor expansion
• Larger than the other dorsal interosseous muscles
• Between its to heads the radial artery passes from the back of the hand to the palm

9. profunda brachial artery (Brachial profunda artery)

• Branch of the brachial artery
• Arterial supply to muscles and tissues of the posterior compartment of the arm
• Arises just below lower border of teres major muscle
• Follows the radial nerve, running at first posteriorly between medial and lateral heads of triceps brachii muscles, then along the groove for the radial nerve
• Pierces lateral intermuscular septum and descends between brachioradialis muscle and brachialis muscle anterior to lateral epicondyle of humerus
• Ends by anastomosing with radial recurrant artery
• Spirals around the shaft of the humerus in the radial groove where it is susceptible to injury in mid-shaft fractures

10. deep palmar arch

• Formed mainly from terminal branch of radial artery, with ulnar artery contributing via deep palmar branch
• Lies upon bases of metacarpal bones and interossei
• Deep to oblique head of adductor pollicis muscles, flexor tendons, and lumbricals
• Alongside is the deep branch of ulnar nerve (running in opposite direction toward radius)
• Branches include palmar metacarpal arteries

11. glenoid labrum

• A ring of fibrocartilage that runs around the cavity of the scapula in which the head of the humerus fits
• Deepens the cavity (glenoid cavity) and increases surface of shoulder joint

12. Recurrant branch of median nerve

• Also referred to as the muscular branch of the median nerve
• Goes to the thenar eminence, where it provides motor innervation to (3) thenar muscles: abductor pollicis brevis, flexor pollicis brevis, and oponens pollicis
• Control movement of the thumb

13. radial artery

• Arises from bifurcation of brachial artery in the cubital fossa
• Runs distally down anterior portion of forearm
• Runs laterally around the wrist, passing through the anatomical snuff box and between heads of 1st dorsal interosseous muscle
• Passes anteriorly between heads of adductor pollicis and becomes the deep palmar arch (which joins with deep branch of ulnar artery)

14. anterior interosseous nerve

• Branch of median nerve
• Motor supply to: flexor pollicis longus muscle, radial half of flexor digitorum profundus muscle, and pronator quadratus muscle
• No sensory innervation
• Courses along the anterior surface of the interosseous membrane

15. circumflex scapular artery

• Branch of subscapular artery
• Arterial supply to: teres major muscle, teres minor muscle, and infraspinatus muscle
• Curves around axillary border of the scapula, traveling through the anatomical "triangular Space" made up of the subscapularis superiorally, the teres major inferiorally, and the long head of the triceps laterally
• Enters the infraspinatus fossa under the teres minor muscle
• Anastomoses with the suprascapular artery and the dorsal scapular artery to form the scapular anastomosis

16. spinal accessory nerve

• Eleventh of twelve cranial nerves
• Leaves cranium through jugular foramen along with glossopharyngeal nerve (C-9) and the vagus nerve (C-10)
• Innervates: sternocleidomastoid muscle and trapezius muscle on the ipsilateral side

17. radial nerve

• Branch of the posterior cord of the brachial plexus (C5, 6, 7, 8, & T1)
• Branches include: posterior brachial cutaneous nerve, inferior lateral brachial cutaneous nerve, posterior antebrachial cutaneous nerve, superficial and deep branches
• Sensory supply to: skin of the posterior arm, forearm and hand
• Motor supply to:
  • muscles of the posterior arm: triceps brachii muscle, anconeus muscle
  • muscles of the posterior forearm: brachioradialis muscle, extensor carpi ulnaris muscle, extensor carpi radialis longus muscle, extensor carpi radialis brevis muscle, extensor digitorum muscle, extensor digiti minimi muscle, supinator muscle, abductor pollicis longus muscle, extensor pollicis longus muscle, extensor pollicis brevis muscle, extensor indicis muscle

18. extend/abduct

• ?
• extensor carpi radialis longus (or brevis?) lae

19. Posterior interosseous nerve

• Deep branch of radial nerve; becomes posterior interosseous nerve after emerging from supinator muscle on posterior forearm (debated)
• Passes to the back of the forearm through the supinator muscle to the middle of the forearm
• It descends on the interosseous membrane, posterior to extensor pollicis longus, to the back of the carpus
• At the carpus, it presents a ganglionic enlargement from which fibers are distributed to the elements of the carpus
• Motor supply to: extensor carpi radialis brevis muscle, supinator muscle, extensor digitorum muscle, extensor digiti minimi muscle, abductor pollicis longus muscle, extensor pollicis longus muscle, extensor pollicis brevis muscle, extensor indicis muscle
• No cutaneous branches

20. radial recurrent artery

• Branch of radial artery
• Arterial supply to the lateral side of the elbow and adjacent extensor muscles
• Anastomoses with the radial collateral artery
• It courses in the groove between the brachioradialis muscle and the brachialis muscle

21. annular ligament of radius

• Strong band of fibers that encircles the head of the radius and keeps it in contact with the radial notch of the ulna
• Forms about four-fifths of the osseo-fibrous ring, and is attached to the anterior and posterior margins of the radial notch
• A few of its lower fibers are continued around below the cavity and form at this level a complete fibrous ring

22. dorsal scapular nerve

• Arises from the brachial plexus, usually from anterior ramus of C5
• Provides motor innervation to rhomboideus major and minor muscles, and levator scapulae muscle
• No sensory
• Passes through the scalenus medius muscle

23. princeps pollicis artery

• Branch of the radial artery
• Descends between first dorsal interosseous muscle and oblique head of adductor pollicis, along medial side (ulnar side) of first metacarpal bone to the base of proximal phalanx
• Lies beneath tendon of flexor pollicis longus muscle, where it divides into to branches, which run along the sides of the thumb

24. axillary nerve

• Comes off posterior cord of brachial plexus at the level of the axilla, and carries fibers from C5 and C6
• Travels through the quadrangular space with the posterior circumflex humeral artery and vein
• Motor supply: deltoid muscle and teres minor muscle
• Sensory: skin of upper lateral arm (interior region of deltoid muscle) by superior lateral cutaneous nerve

25. brachial artery

• Branch of axillary artery; brachial artery is the continuation of the axillary artery distal to the teres major muscle
• Branches/continuations from this artery include: deep brachial artery, superior ulnar collateral arter, nutrient artery, inferior ulnar collateral artery; terminal branches are the radial artery and the ulnar artery
• Continues down the arm until it reaches the cubital fossa and elbow; ends by dividing into radial artery and ulnar artery which run down forearm

26. supraspinatus muscle

• Origin: supraspinatus fossa superior to spine of scapula
• Insertion: greater tubercle of humerus (highest facet)
• Abducts the arm; initiates abduction
• Innervation: suprascapular nerve (C5,6) from the superior trunk of the brachial plexus
• Arterial supply: suprascapular artery

27. subscapularis muscle

• Origin: medial 2/3s of costal surface of scapula (subscapular fossa)
• Insertion: lesser tubercle of humerus
• Medially rotates the arm, assists in extension of arm
• Innervation: upper and lower subscapular nerves (C5,6)
• Arterial supply: subscapular artery
• The rotator cuff muscles are subscapularis muscle, supraspinatus muscle, infraspinatus muscle, and teres minor muscle.

28. viniculum

• Given off by tendons of both digital flexors (flexor digitorum superficialis and profundus and flexor pollicis longus) before they reach sites of insertion
• Attach directly to the phalanx
• There is a short viniculum and a long viniculum for each tendon
• They provide routes for blood vessels to reach the tendons from the periosteum

29. Upper trunk C5-C6

• Formed by merging of ventral/anterior rami of C5 and C6 spinal nerves
• One of three trunks of the brachial plexus

30. Common interosseous artery

• Branch of ulnar artery
• About 1 inch in length, arises below tuberosity of radius
• Branches into anterior and posterior interosseous arteries
• Arterial supply to deep structure of forearm

31. winging at scapula

• See long thoracic nerve

32. thoracodorsal artery

• Branch of subscapular artery
• Travels inferiorly with thoracodorsal nerve
• Arterial supply to latissimus dorsi

33. Long thoracic nerve

• Source is the brachial plexus (ventral primary rami of spinal nerves C5-C7)
• Motor to serratus anterior muscle
• No cutaneous branches
• Located on the superficial surface of the serratus anterior muscle
• Lesion of this nerve causes scapular winging, hence the saying "C5, 6, & 7 keep the wings from heaven"

34. Extensor hood

• Triangular aponeurosis through which extensor digitorum, the interossei, and the lumbricals act on the metacarpophalangeal and interphalangeal (MP and IP) joints
• Located over the MP joints and proximal and middle phalanges
• Formed by the aponeurotic expansions of extensor digitorum tendons, tendons of interossei, lumbricals, and some intrinsic bands

35. Articular disk

• Located on distal end of radius (part of wrist-joint)
• The articular disk and the radius together form a transversely elliptical concave surface, or the receiving cavity
• The superior articular surfaces of the navicular, lunate, and triangular form a smooth convex surface (the condyle) which is received into the concavity created by the articular disk/radius

36. Anterior humeral circumflex artery

• Branch of axillary artery (3rd part)
• Arterial supply to: deltoid muscle, arm muscles near neck of humerus
• Runs horizontally from lateral side of axillary artery, beneath the coracobrachialis and short head of the biceps brachii, in front of the neck of the humerus
• Upon reaching the intertubercular sulcus, it gives off a branch to supply head of humerus and shoulder joint
• Continues onward beneath long head of biceps brachii muscle and deltoideus muscle, and anastomoses with the posterior humeral circumflex artery

37. Posterior interosseous artery

• Branch of common interosseous artery
• Gives off the interosseous recurrant artery
• Arterial supply to the muscles of the posterior (extensor) forearm compartment: supinator muscle, abductor pollicis longus muscle, extensor pollicis longus muscle, extensor pollicis brevis muscle, and extensor indicis muscle.
• Passes proximal to the interosseous membrane (over upper border) to reach the extensor compartment of the forearm
• Appears between the borders of the supinator muscle and the abductor pollicis longus, and runs down the posterior forearm between superificial and deep layers of muscles
• Anastomoses with the termination of the volar interosseous artery

38. Tendon flexor digitorum superficialis

• Four long tendons come off the flexor digitorum superficialis muscle, an extrinsic flexor muscle of the fingers
• Tendons travel through the carpal tunnel
• They attach to the base of the proximal phalanges of the four fingers
• These tendons each have a hole, or split, at the end through which the tendons of flexor digitorum profundus will travel

39. Brachialis muscle

• Originates on the anterior surface of the lower 1/2 of the humerus, and associated intermuscular septa
• Inserts on the coronoid process of the ulna
• Powerful flexor of the forearm
• Innervated by the musculocutaneous nerve (C5,C6)
• Arterial supply from brachial artery and radial recurrant artery

40. Superior ulnar collateral artery

• Branch of brachial artery; sometimes branches from upper part of profunda brachial artery
• Arterial supply to the medial arm muscles
• Travels with the ulnar nerve
• It pierces the medial intermuscular septum, and descends on the surface of the medial head of the Triceps brachii to the space between the medial epicondyle and olecranon.
• Ends under the flexor carpii ulnaris by anastomosing with the posterior ulnar recurrant and inferior ulnar collateral

41. Pronator teres

• Muscle mainly of the forearm
• Serves to pronate the forearm
• Two heads: humeral and ulnar
  • Humeral: larger and more superficial, arises above medial epicondyle of humerus and common flexor tendon
  • Ulnar: thin, arises from medial side of coronoid process of ulna and joins the humeral head at an acute angle
• Passes obliquely accross the forearm and ends in a flat tendon, which inserts into a rough impression at the middle of the lateral surface of the body of the radius, just below insertion of supinator muscle
• Median nerve enters forearm between the two heads; innervates this muscle
• Arterial supply from ulnar artery and anterior ulnar recurrant arter

42. Superficial palmar arch

• Formed predominately by the ulnar artery, with a contribution from the superficial palmar branch of the radial artery
• Passes across the palm; more distal than the deep palmar arch
• With the thumb fully extended, the arch would be at the level of a line drawn from the distal border of the thumb across the palm

43. Capitate bone

• Largest of the carpal bones
• Occupies the center of the wrist
• Superior surface is rounded, smooth, and articulates with the lunate bone
• Inferior surface is divided by two ridges into three facets for articulation with the second, third, and fourth metacarpal bones; the third is the largest
• Medial surface articulates with the hamate bone
• Lateral surface articulates with the lesser multangular bone
• Dorsal surface is broad and rough
• Palmar surface is rounded, narrow, and rough for attachment of ligaments and part of adductor pollicis muscle

44. Deep radial nerve

• Originates from posterior cord of brachial plexus (C5-C8 and T1)
• Radial nerve divides into a deep branch and then continues as the superficial branch which goes on to innervate the dorsum of the hand
• Pierces the supinator muscle, after which it is known as the posterior interosseous nerve
• Motor supply to: extensor carpi radialis brevis muscle, supinator muscle, extensor digitorum muscle, extensor digiti minimi muscle, abductor pollicis longus muscle, extensor pollicis longus muscle, extensor pollicis brevis muscle, extensor indicis muscle
• No cutaneous branches

45. Deep transverse metacarpal ligament

• A narrow fibrous band that runs across the palmar surface of the heads of the second, third, fourth, and fifth metacarpal bones, connecting them together
• It is blended with the palmar metacarpophalangeal ligaments

46. Extensor digiti minimi

• Origin: Common extensor tendon, lateral epicondyle of the humerus
• Insertion: Joins the extensor digitorum tendon to the 5th digit and inserts in the extensor expansion
• Action: Extends the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints of the 5th digit
• Innnervated by deep radial nerve
• Arterial supply by interosseous recurrent artery
• It appears to be the ulnar-most portion of the extensor digitorum muscle 

47. Musculocutaneous nerve

• Arises from lateral cord of brachial plexus (C5, C6, C7)
• Pierces the coracobrachialis muscle and passes obliquely between the biceps brachii muscle and the brachialis muscle, to the lateral side of the arm
• Slightly above the elbow, pierces the deep fascia lateral to the tendon of the biceps brachii muscle and continues into the forearm as the lateral antibrachial cutaneous nerve
• Motor supply to: coracobrachialis muscle, biceps brachii muscle, and the greater part of brachialis muscle
• Sensory supply to: skin of lateral side of forearm

48. Posterior ulnar recurrent artery

• Branch of ulnar artery
• Often arises from a common trunk with the anterior ulnar recurrent artery
• Provides arterial supply to medial side of the elbow and flexor muscles of the forearm
• Lies beneath flexor carpi ulnaris as it passes/ascends from the surface of flexor digitorum profundus
• Ascends between the heads of flexor carpi ulnaris; it supplies the neighboring muscles and elbow joint, and anastomoses with the superior and inferior ulnar collateral arteries and interosseous recurrent arteries

49. Scaphoid bone

• Bone of the wrist (carpal) found on the radial side
• AKA navicular bone
• Largest bone of the proximal row
• Superior surface is convex, smooth, and articulates with the trapezium bone (greater multangular) laterally and trapezoid bone (lesser multangular) medially
• Medial surface articulates with lunate and capitate bones
• Lateral surface gives attachment to the radial collateral ligament of the wrist
• Anterior boundary (floor) of the anatomical snuff box? lae
• Posterior surface crossed by radial artery? lae

50. Tendon flexor digitorum profundus

• Of the flexor digitorum profundus muscle, which originates from anterior side of the ulna
• The tendons insert at the base of the distal phlanx of digits 2-5
• Along with flexor digitorum superficialis, has long tendons that run down the forearm and through the carpal tunnel and attach to the palmar side of the phalanges
• Flexes the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints
• Innervations from medial nerve (radial 1/2) and ulnar nerve (ulnar 1/2)
• Arterial supply from ulnar artery and anterior interosseous artery

51. Transverse humeral ligament

• Broad band passing from the lesser to the greater tubercle of the humerus
• Converts the intertubercular groove into a canal; spans the intertubercular groove
• Holds the biceps tendon (long head) in place

52. Upper subscapular nerve

• Branch of posterior cord of brachial plexus (C5, C6)
• Motor supply to subscapularis muscle
• No cutaneous branches
• Subscapularis muscle is a medial rotator of the humerus

53. Abductor pollicis brevis

• Origin: flexor retinaculum, scaphoid bone, trapezius bone
• Inserts by a thin, flat tendon into the base of the proximal phalanx of 1st digit
• Action: Abducts the thumb
• Innervated by recurrent branch of median nerve
• Arterial supply from superficial palmar branch of radial artery
• Abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis are located in the thenar compartment of the hand

54. Cephalic vein

• Forms the lateral side of the dorsal veinous arch of the hand, and is the main superficial vein of the lateral forearm
• Drains into the axillary vein
• Communicates with the basilic vein via the median cubital vein at the elbow
• Is also found in the superficial fascia along the anterolateral surface of the biceps brachii muscle

55. Common palmar digital artery

• Branch of superficial palmar arterial arch
• Gives off two proper palmar digital arteries
• Arterial supply to the palmar aspect of two adjacent digits
• Common palmar digital arteries anastomose with palmar metacarpal arteries

56. Coracoacromial ligament/arch

• A strong triangular band that extends from the coracoid process to the acromion
• Attached, by its apex, to the summit of the acromion just in front of the articular surface for the clavicle; and by its broad base to the whole length of the lateral border of the coracoid process

 57. Dorsalis indicis artery

• Suggestions???

58. Extend fingers at extend wrist MP and IP joints

• ??
• Extensor carpi radialis brevis muscle
• Extensor indicis muscle

59. Extensor carpi radialis brevis

• Origin: Common extensor tendon, lateral epicondyle of humerus
• Inserts on the dorsum of the 3rd metacarpal bone at the base
• Action: Extends the wrist, abducts the hand
• Innervated by deep radial nerve
• Arterial supply from radial artery
• Works with the extensor carpi radialis longus and flexor carpi radialis in abduction of the hand

60. Extensor indicis

• A deep forearm extensor muscle
• Origin: Interosseous membrane and posterolateral surface of distal ulna
• Insertion: Its tendon joins the tendon of the extensor digitorum to the 2nd digit and both tendons insert into the extensor expansion
• Action: Extends the 2nd digit at the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints
• Innervated by deep radial nerve
• Arterial supply from posterior interosseous artery

61. Extensor pollicis longus tendon

• Origin: Interosseous membrane and middle part of posterolateral surface of the ulna
• Inserts into the base of the distal phalanx of the thumb
• Action: Extends the thumb at the interphalangeal joint
• Innervated by deep radial nerve
• Arterial supply from posterior interosseous artery
• Hooks around dorsal radial tubercle and forms part of the medial border of the anatomical snuffbox

62. Flexor retinaculum

• Strong, fibrous band that arches over the carpus
• Converts the deep groove on the anterior surface of the carpal bones into a tunnel (the famous carpal tunnel)
• Flexor tendons of the digits, tendon of flexor pollicis longus, and median nerve pass through the carpal tunnel
• Attached medially (ulnar side) to the pisiform bone and hook of the hamate bone
• Attached laterally (radial side) to the tuberosity of the scaphoid bone and trapezium bone
• Superiorly, blends with the deep layer of antebrachial fascia
• Inferiorly, blends with the fascia that invests the thenar and hypothenar muscles, both of which takes origin at the retinaculum

63. Interosseous membrane

• A fibrous sheath that stretches between the radius and the ulna
• Provides additional area for muscle attachment
• Point of reference for several nerves and vessels of the forearm: anterior/posterior interosseous arteries, anterior/posterior interosseous nerves, common interosseous artery (from ulnar artery), recurrent interosseous arter

64. Interosseous recurrent artery

• Branch of posterior interosseous artery
• Arterial supply to the anconeus muscle and elbow joint
• Anastomoses with the middle collateral artery (a branch of profunda brachii)

65. Lower subscapular artery??? (I'm going to assume they meant lower subscapular nerve)

• Branch of posterior cord of the brachial plexus (C5, C6)
• Motor supply to subscapularis muscle and teres major muscle
• No cutaneous branches

66. Tendon of flexor pollicis longus

• Of the flexor pollicis longus muscle
• Origin: anterior surface of the radius and interosseous membrane
• Inserts into the base of the distal phalanx of the thumb
• Flexes the MP and IP joints of the thumb
• Innervated by median nerve
• Arterial supply from anterior interosseous artery

67. Thoracodorsal nerve

• Branch of posterior cord of brachial plexus (C7, C8)
• Motor supply to latissimus dorsi muscle
• No cutaneous branches
• AKA middle subscapular nerve

68. Trochlear notch of the ulna

• Cresent shaped notch on the anterior surface of the proximal end of the ulna
• It is located between the olecranon and coronoid process of the ulna
• Articulates with the trochlea of the humerus

69. Ulnar collateral ligament

• A triangular fibrous band that spans the space between the medial epicondyle of the humerus, the subcutaneous edge of the olecranon, and the coronoid process
• Can be divided into an anterior and a posterior portion:
  • Anterior: Attached by its apex to the medial epicondyle of the humerus, and below by its base to the medial margin of the coronoid process
  • Posterior: Attached by its apex to the posterior portion of the medial epicondyle, and by its base more posteriorly to the medial margin of the olecranon

70. Abductor digiti minimi muscle

• Origin: pisiform bone
• Tendon inserts into the base of the proximal phalanx of the 5th digit on its ulnar side
• Action: Abducts the 5th digit
• Innervated by the deep branch of the ulnar nerve
• Arterial supply from the ulnar artery
• Abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi are located in the hypothenar compartment of the hand

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Comments and Suggestions

• Hello all- Now that we've recieved the updated lists from Hessam I will be working from those now and will add the terms from the back region that my list did not include. -- AndreaConway - 28 Sep 2006 - 10:09

• Shweta: I took the liberty to start a second page (UpperLimbBackIdendificationsRegion) for the tags by region work. Perhaps these two topic can be merged as they mature. There is a link to the region page from the "Collaborative Study" page. lae -- LorenEvey - 28 Sep 2006 - 05:09

• I have begun annotating the HITs list for the upper limb. I have completed the first 40 terms from the identifications list from 1997-2004, so there will definitely be some changes and additions when I get the updated list (1997-2005). I am planning on annotating the majority of the list, and hopefully arranging it in some logical manner (time permitting, of course). I hope this is a help to someone other than myself! Evey- I wasn't sure how to present it as nicely as you did for the last list, so I just made it an attachment like before. Feel free to work your magic on this one. Thanks! -- AndreaConway - 25 Sep 2006 - 05:04

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