Anatomy infratemporal fossa

Question 1

the infratemporal fossa is distinguished by its specific boundaries

which boundary is represented by the ramus of the mandible

Answer 1

lateral boundary of the infratemporal fossa

Question 2

the infratemporal fossa is distinguished by its specific boundaries

which boundary is represented by the zygomatic arch

Answer 2

superior boundary of the infratemporal fossa

Question 3

the infratemporal fossa is distinguished by its specific boundaries

which boundary is represented by the tympanic plate and mastoid process

Answer 3

posterior boundary of the infratemporal fossa

Question 4

the infratemporal fossa is distinguished by its specific boundaries

which boundary is represented by the posterior aspect of the maxilla

Answer 4

anterior boundary of the temporal fossa

Question 5

the infratemporal fossa is distinguished by its specific boundaries

which boundary is represented by the lateral pterygoid plate

Answer 5

medial boundary of the temporal fossa

Question 6

what is the function of the lateralpterygoid

Answer 6

to open the jaw

Question 7

the lateral pterygoid has a superior and inferior head

what are the origins for their respected head

Answer 7

infratemporal crest of greater wing of sphenoid (superior head)

lateral surface of lateral pterygoid plate (inferior head)

Question 8

the lateral pterygoid has a superior and inferior head

what does the lateral pterygoid insert

Answer 8

TMJ capsule and articular disc

mandibular (pterygoid) fovea

Question 9

what nerve innervates the lateral pterygoid

Answer 9

CN V3 (mixed branch of motor and sensory)

Question 10

what is the function of the medial pterygoid

Answer 10

close jaw

Question 11

the medial pterygoid has two heads, deep and superficial.

where do both heads originate

Answer 11

medial surface of lateral pterygoid plate (deep head).

Tuberosity of maxilla (superficial head)

Question 12

where is the insertion point located for the medial pterygoid

Answer 12

medial surface of the mandibular ramus

Question 13

what is the functionof the pterygoid venous plexus

Answer 13

is a collection of small tributaries which drain in to maxillary vein.

Question 14

the maxillary artery is divided in to three sections what are they

Answer 14

green - 1^st part before the lateral pterygoid

yellow - 2^nd part is associated with lateral pterygoid

blue - 3^rd part after lateral pterygoid

Question 15

where is the inferior alveolar artery located

Answer 15

Question 16

where is the middle meningeal artery located

Answer 16

Question 17

where is the buccal artery located

Answer 17

Question 18

where is the deep temporal arteries located

Answer 18

Question 19

where is the posterior superior alveolar artery located

Answer 19

Question 20

where is the infra-orbital artery located

Answer 20

Question 21

wher is the sphenopalatine artery located

Answer 21

Question 22

why does the mandibular nerve exists as two seperate roots

Answer 22

mandibular nerve has motor and sensory functions.

Question 23

the mandibular nerve is divided into two divisions

anterior and posterior

what are the nerve branches for the anterior divsion

Answer 23

deep temporal

buccal

muscular branches (masseter and lateral pterygoid)

Question 24

the mandibular nerve is divided into two divisions

anterior and posterior

what are the branches of the posterior division

Answer 24

auriculotemporal nerve

inferior alveolar nerve

nerve to mylohyoid

mental nerve

lingual nerve

Question 25

wher is the **otic ganglion** located

Answer 25

The **Otic ganglion** is a small parasympathetic **ganglion** located immediately below the foramen ovale in the infratemporal fossa and on the medial surface of the mandibular nerve.

Question 26

what is the function of the **otic ganglion**

Answer 26

It is functionally associated with the glossopharyngeal nerve and innervates the parotid gland for salivation

Question 27

how does the **otic ganglion** enable the relase of saliva

Answer 27

the **otic ganglion** send postsynaptic fibres to the auriculotemporal nerve, which conveys them to the parotid gland. They produce vasodilator and secretomotor effects.

Question 28

the **chorda tympani** is part of which cranial nerve

Answer 28

facial nerve

Question 29

when does the **chorda tympani** branch off

Answer 29

after it passes through the stylomastoid foramen

Question 30

what nerve fibres does the **chroda tympani carry**

Answer 30

special sensory and parasympathetic

Question 31

after the **chroda tympani** branches off what nerve does it conect to

Answer 31

the **lingual nerve** of the CN V3

Question 32

what do the speacial sensory fibres of the **chroda tympani** innervate

Answer 32

anterior 2/3rd of the tongue and palate for sense taste

Question 33

what do the **parasympathetic nerve fibres of the chorda tympani** innervate

Answer 33

they innervate the secretomotor innervation of the submandibular and sublingual salivary gland

Question 34

which nerve needs to be blocked to achieve anaesthesia on the buccal surface/skin/mucosa

Answer 34

buccal branch

Question 35

which nerve needs to be blocked to achieve anaesthesia on the anterior mucosa

Answer 35

mental branch

Question 36

which nerve needs to be blocked to achieve anaesthesia on the anterior teeth

Answer 36

incisive branch of inferior alveolar

Question 37

which nerve needs to be blocked to achieve anaesthesia on the posterior teeth

Answer 37

dental branches of inferior alveolar