Parotid, Masseteric, and Temporal Regions Flashcards
Temporal muscle origin
Temporal lines and temporal fossa
Thinnest portion of the neurocranium?
Temporal fossa
Zygomatic arch
Where zygoma articulates with the temporal bone
Facial nerve foramen
- Stylomastoid foramen
- Internal acoustic meatus
TMJ
Point of articulation between the mandible and cranium
What joint do muscles of mastication act on?
TMJ
Mylohoid muscle origin
Horizontal portion of the mandible
Parotid region borders
Medially and inferiorly to the zygomatic arch
Temporal regions border
Above ramus of the mandible
Parotid gland
Largest of salivary glands
Parotid duct
Delivers parotid gland secretions into the mouth
Mumps
Infection in parotid gland that causes pain
Structures that course through the parotid glands
- Facial nerve
- Retromandibular vein
- External carotid
What are the terminal branches of the external carotid artery?
- Maxillary artery
- Superficial temporal artery
Where does the transverse facial artery come from?
Superficial temporal artery
Retromandibular vein is formed by the union of the…
- Superficial temporal vein
- Maxillary vein
The facial vein can also drain into…
The cranial cavity
What are the deepest contents of the parotid region?
- Auriculotemporal nerve
- Stylohyoid muscle
- Posterior belly of the digastric muscle
Auriculotemporal nerve
Arose within infratemporal fossa to make its way into the parotid region and temporal region to mediate sensation and then innervates the skin
Masseter and temporalis innervation
CN V3, mandibular division
Buccinator action
Facial expressions
Buccal nerve
Motor nerves, courses superficial to masseter n.
Long buccal nerve
Sensory nerve, emerges deep to the masseter muscle, mediates sensation from the buccal skin and mucosa and gingiva adjacent to the mandibular molar teeth
The facial artery and vein crosses what structure, then enters what structure?
- Crosses the mandible
- Goes through the buccal fat pad
Masseter origin
Zygomatic arch
Masseter innervation
Mandible
What are the four muscles of mastication?
- Masseter
- Temporalis
- Lateral pterygoid muscle
- Medial pterygoid muscle
Temporalis insertion
Coronoid process of mandible
What type of innervations do all CN V divisions have?
Sensory
What type of innervations does CN V3 have?
Sensory and motor
What goes through the mandibular notch?
Masseteric nerve and masseteric artery
