Infratemporal fossa Lecture Flashcards Preview

Anatomy Exam 3 > Infratemporal fossa Lecture > Flashcards

Flashcards in Infratemporal fossa Lecture Deck (12):
1

Name muscles and their innervation of those that act to depress the mandible (open mouth)

-Anterior belly of digastric
-V3 (nerve to mylohyoid)

2

Name muscles and innervation of those that act to elevate mandible (close mouth)

-temporalis
-masseter
-medial pterygoid
-all innervated by mandibular nerve (V3)

3

Name the muscles involved in protruding the mandible and their innervation

-lateral pterygoid
-masseter
-medial pterygoid
-all innervated by mandibular nerve V3

4

Name the muscles involved in retruding the mandible and their innervation

-temporalis (posterior fibers)
-mandibular nerve V3

5

Name the muscles involved in grinding (side to side movements of mandible)

-Temporalis of same side
-pterygoids of opposite sides
-all mandibular nerve of V3

6

Name function and innervation of anterior belly of digastric

-depress mandible/open mouth
-nerve to mylohyoid of V3

7

Name function and innervation of temporalis muscle

-elevate/close mouth
-retrude mandible
-grinding (same side)
-mandibular nerve V3

8

Name function and innervation of masseter muscle

-elevate/close mouth
-protrude mandible
-mandibular nerve V3

9

Name function and innervation of medial pterygoid

-elevate/close mouth
-protrude mandible
-grinding (opposite side)
-mandibular nerve V3

10

Name function and innervation of lateral pterygoid

-protrusion of mandible
-grinding (opposite side)
-mandibular nerve V3

11

V3 is found within the infratemporal fossa, name its 4 sensory branches found here as well.

-BAIL
-buccal
-auriculotemporal
-inferior alveolar
-lingual (hitchhikes with chorda tympani of VII)

12

The maxillary artery courses through the infratemporal fossa. What are its main branches in the infratemporal fossa and where do these go?

-middle meningeal artery: passes through foramen spinosum and enters middle cranial fossa to supply skull and dura
-inferior alveolar artery
-deep temporal arteries
-the maxillary artery courses through the IT fossa, then enters the pterygopalatine fossa through the pterygomaxillary fissure