CNV2

Question 1

describe the course of CNV3 (mandibular division)

Answer 1

passes through foramen ovale and into infraremporal fossa where it gives several branches

Question 2

where does foramen ovale open?

Answer 2

directly into external base of cranium

Question 3

what are the boundaries of the infratemporal fossa?

Answer 3

lateral: ramus of mandible
medial: lateral pterygoid plate of sphenoid bone
anterior: posterior aspect of maxilla
posterior: tympanic plate, mastoid & styloid processes
superior: infratemporal crest of sphenoid bone
inferior: angle of mandible

Question 4

what is the skin over angle of mandible supplied by?

Answer 4

cervical plexus with great auricular nerve

Question 5

what are the main branches of cnv3?

Answer 5

auriculotemporal
buccal
mental
lingual
muscular

Question 6

what are the components of cnv3 main trunk? (before division)

Answer 6

meningeal branch
branch to tensor tympani
branch to tensor veli palatini
nerve to medial pterygoid

Question 7

what nerve in the main trunk is not motor?

Answer 7

meningeal nerve

-sensory to dura mater

Question 8

what are the component of the anterior trunk?

Answer 8

deep temporal nerves
nerve to lateral pterygoid
buccal nerve
masseteric nerve

Question 9

what nerve in the anterior trunk is sensory?

Answer 9

buccal

Question 10

what are the components of the posterior trunk?

Answer 10

auriculotemporal nerve
inferior alveolar nerve
lingual nerve

Question 11

which nerve in the posterior trunk is mixed? (sensory & motor)

Answer 11

inferior alveolar

Question 12

which parts of the oral cavity does cnv3 supply?

Answer 12

general sensation to the floor of the mouth, lower teeth, gums, anterior 2/3 of tongue via lingual nerve

Question 13

what nerve supplies the cheek and lateral gum?

Answer 13

buccal nerve

Question 14

what nerve supplies the lower teeth?

Answer 14

inferior alveolar and branch: incisive nerve

Question 15

what nerve supplies the skin of chin and lower lip?

Answer 15

inferior alveolar as mental nerve

Question 16

what does the motor component of the inferior alveolar supply?

Answer 16

mylohyoid and anterior belly of digastric

Question 17

which nerve supplies the anterior teeth?

Answer 17

incisive branch of inferior alveolar

Question 18

which nerve supplies posterior teeth? (& premolars)

Answer 18

main trunk of inferior alveolar

Question 19

which nerves supply gingivae?

Answer 19

lingual nerve -lingual
buccal nerve-posterior buccal
mental nerve- anterior buccal

Question 20

what supplies taste to the anterior 2/3 of tongue?

Answer 20

facial nerve (CNV2)

Question 21

what is general sensation?

Answer 21

pressure, temp, pain etc.

Question 22

what is special sensation?

Answer 22

taste

Question 23

what are the muscles of mastication

Answer 23

lateral pterygoid
medial pterygoid
masseter
temporalis

Question 24

which division has the motor root for MOM?

Answer 24

cnv3

Question 25

what other muscles does cnv3 supply?

Answer 25

tensor tympani- middle ear
tensor palti
mylohyoid
anterior belly of digastric

Question 26

what nerve supplies all the muscles of facial expression?

Answer 26

facial nerve (CNV2)