Parotid Region - Laboratory Identifications

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Temporomandibular Joint and Parotid Region

• Mastoid process
• Styloid process
• Stylomastoid foramen
• External acoustic meatus
• Postglenoid tubercle
• Mandibular fossa
• Articular tubercle
• Condyle
• Mandibular notch
• Masseteric artery
• Masseteric nerve
• Coronoid process
• Articular capsule
• Superior synovial cavity
• Articular Disk
• Inferior synovial cavity
• Superior head of lateral pterygoid
• Inferior head of lateral pterygoid
• Posterior fibers of temporalis
• Anterior fibers of temporalis
• Facial nerve
• Auriculotemporal nerve
• Communicating branch (parasympathetics)
• Posterior belly digastric
• Stylohyoid muscle
• Lesser occipital nerve
• Great auricular nerve
• Parotid Gland

Mandible

• condyle - site of insertion for inferior head lateral pterygoid muscle
• neck - anterior to external auditory canal
• coronoid process - insertion of temporalis muscle
• mandibular notch - transmits masseteric artery and nerve to masseter muscle
• ramus - lateral boarder of infratemporal fossa, retromandibular vein, maxillary artery, parotid gland
• angle - near level of lingula (medial surface)
• body - most commonly broken bone in males, fracture puts inferior alveolar nerve and artery at risk
• inferior alveolar process - base of teeth
• mandibular foramen - transmits inferior alveolar nerve and artery into mandible, inferior to lingula
• lingula - site of attachment of sphenomandibular ligament
• digastric fossa - origin of anterior belly of digastric muscle
• superior and inferior mental spine - origin of genioglossus and geniohyoid muscles
• sphenomandibular ligament - from spine of sphenoid to lingula, limits depression of the mandible
• mental foramen - transmits mental nerve and artery (continuation of inferior alveolar nerve)
• inferior alveolar nerve and artery - provides the inferior dental plexus
• inferior dental plexus
• temporalis muscle - arises from temporal fossa, medial to zygomatic arch, inserts on coronoid process and anterior ramus
• masseter muscle - arises from zygomatic arch, inserts on lateral body and angle of mandible
• medial pterygoid muscle - originates from medial aspect of lateral pterygoid plate, inserts on medial body
• mental nerve and artery

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