(E2) 4 - Infratemporal Fossa

Question 1

Describe the location of the temporal fossa.

Answer 1

Broad area on lateral skull superior to zygomatic arch.

Question 2

What muscle primarily occupies the temporal fossa?

Answer 2

Temporalis Muscle

Question 3

What can be found in the infratemporal fossa?

Answer 3

Question 4

Describe the Pterion and what can be found there.

Answer 4

Question 5

Anterior and Posterior Deep Temporal Arteries branch from ______. The veins drain into the _______

Answer 5

• 2nd part of the maxillary artery
• pterygoid plexus

Question 6

Middle temporal artery branches from _____ and anastamoses with _______.

Veins drain into ________

Answer 6

• superficial temporal artery
• deep temporal arteries
• superficial temporal vein

Question 7

_________ innervate
temporalis within temporal fossa

Answer 7

Deep temporal nerves

Question 8

________ courses anterior to external acoustic meatus to convey sensation from lateral head

Answer 8

Auriculotemporal nerve

Question 9

_____ conveys sensation from lateral scalp

Answer 9

Zygomaticotemporal Nerve

Question 10

Facial nerve (____ branch) innervates superior orbital muscles, frontalis and auricularis muscles.

Answer 10

Temporal Branch

Question 11

Describe the boundaries of the infratemporal fossa

Answer 11

Wedge-shaped inferior to temporal fossa, deep to mandible

Question 12

Infratemporal fossa is continuous with ______ fossa via _____ fissure

Answer 12

• pterygopalatine
• pterygomaxillary

Question 13

Infratemporal fossa is also continuous
with_____ via inferior orbital fissure

Answer 13

• orbit

Question 14

Infratemporal fossa is continuous with middle cranial fossa via ____ and _____

Answer 14

• foramen ovale
• foramen spinosum

Question 15

What is the main artery to the infratemporal fossa?

Answer 15

Maxillary Artery

Question 16

The maxillary artery is a terminal branch of ______

Answer 16

External Carotid Artery

Question 17

Describe the course of the maxillary artery

Answer 17

Courses horizontally between neck or ramus of mandible and sphenomandibular ligament

Question 18

What are the 3 parts of the maxillary artery?

Answer 18

Question 19

What are the 5 branches of the 1st part of the maxillary artery?

Answer 19

Question 20

Describe the location of the 1st part of the maxillary artery? (the mandibular part)

Answer 20

Question 21

Describe where the Deep Auricular Artery is and what it supplies.

Answer 21

Question 22

Describe where the Anterior tympanic Artery is and what it supplies.

Answer 22

Question 23

Describe where the Middle Meningeal Artery is and what it supplies.

Answer 23

Question 24

Describe where the Accessory Meningeal Artery is and what it supplies.

Answer 24

Question 25

Describe where the Inferior Alveolar Artery is (as well as enters and exits)

Answer 25

Question 26

Describe the course of the 2nd part of the maxillary artery. (pterygoid part)

Answer 26

Question 27

What are the 5 branches of the 2nd part of the maxillary artery?

Answer 27

Question 28

Describe where the Anterior and Posterior Deep Temporal Arteries are and what they` supplies.

Answer 28

Question 29

Describe where the Masseteric Artery is and what it supplies.

Answer 29

Question 30

Describe where the Pterygoid Arteries are and what they supplies.

Answer 30

Question 31

Describe where the Buccal Artery is and what it supplies.

Answer 31

Question 32

Describe the course of the 3rd part of the maxillary artery.

Answer 32

Courses into pterygopalatine fossa

Question 33

What is the only branch off the 3rd part of the maxillary artery and what does it supply?

Answer 33

Question 34

What nerve is this?

Answer 34

Mandibular V3

Question 35

What are the 5 anterior division branches off of the root of V3?

Answer 35

Question 36

Which nerves off of V3 are deep to the associated muscles?

Answer 36

Question 37

Describe the course of the Masseteric Nerve

Answer 37

Question 38

Describe the course and nerve supply of the Long Buccal Nerve

Answer 38

Question 39

Mandibular Nerve Anterior Division: Motor or Sensory

Answer 39

Mostly motor

Question 40

Mandibular Nerve Posterior Division: Motor or Sensory

Answer 40

Mostly sensory

Question 41

What nerves make up posterior division off of the root of V3?

Answer 41

Question 42

Auriculotemporal nerve - Normally has two roots that unite around _______

Answer 42

middle meningeal artery

Question 43

Describe the course of the Auriculotemporal nerve.

Answer 43

Question 44

Auriculotemporal nerve - Receives parasympathetic fibers from _______

Answer 44

otic ganglion

Question 45

Describe where and what the Otic Ganglion is

Answer 45

Question 46

What is the lesser petrosal nerve comprised of and what does it innervate?

Answer 46

Question 47

Describe the course of the lesser petrosal nerve

Answer 47

Question 48

What is the largest branch of the mandibular nerve?

Answer 48

Inferior alveolar nerve

Question 49

What does the inferior alveolar nerve innervate?

Answer 49

Question 50

Describe the course of the inferior alveolar nerve.

Answer 50

Question 51

Prior to entering the mandibular foramen and canal, ______ branches from the inferior alveolar nerve.

Answer 51

Nerve to Mylohyoid

Question 52

Inferior alveolar nerves continues onto face as _______

Answer 52

mental nerve

Question 53

Describe the course of the inferior alveolar nerve

Answer 53

Question 54

______ carrying preganglionic parasympathetic fibers and special sensory fibers. Joins superoposterior aspect of lingual nerve.

Answer 54

Chorda tympani nerve

Question 55

_____ nerve is medial and anterior to inferior alveolar nerve

Answer 55

Lingual Nerve

Question 56

Lingual nerve passes between ______ and _______

Answer 56

- medial pterygod - ramus

Question 57

Describe the course of the chorda tympani nerve.

Answer 57

Question 58

What does the chorda tympani nerve convey sensory information from?

Answer 58

Question 59

What does the lingual nerve convey sensation from?

Answer 59

Question 60

What does the posterior superior alveolar nerve convey sensory information from?

Answer 60

Question 61

Describe the course of the Posterior Superior Alveolar Nerve

Answer 61

Question 62

______ is a valveless venous network in the infratemporal fossa

Answer 62

Pterygoid plexus

Question 63

What does the pterygoid plexus communicate with?

Answer 63

Facial vein via deep facial vein, cavernous sinus and ophthalmic veins

Question 64

Pterygoid Plexus: Posterior convergence is into maxillary vein(s) that unite with superficial temporal vein to form _______ vein

Answer 64

retromandibular