Trigeminal nerve quiz

Question 1

Where does V2 enter and through what?

Answer 1

pterygopalatine fossa through the foramen rotundum

Question 2

What type of information does V2 carry?

Answer 2

Sensory only

Question 3

name the four branches of the maxillary division

Answer 3

middle meningeal nerve, zygomatic nerve, ganglionic branches(2-3), & the infraorbital nerve.

Question 4

Where does the middle meningeal n. exit, what does it supply?

Answer 4

• round foramen

- middle cranial fossa

Question 5

where does the zygomatic nerve enter the orbit through?

Answer 5

inferior orbital fissure

Question 6

what does the zygomatic nerve give rise to?

Answer 6

a communicating branch, zygomaticotemporal nerve, zygomaticofacial nerve

Question 7

what does the communicating branch carry?

Answer 7

postganglionic parasympathetic fibers from the pterygopalatine ganglion to the lacrimal gland

Question 8

What do the ganglionic branches carry?

Answer 8

sensory info from the upper pharynx, nasal cavity, and palate. through the pterygopalatine ganglion to the maxillary division.

Question 9

how do preganglionic parasympathetic fibers reach the pterygopalatine ganglion?

Answer 9

from the facial nerve by way of the greater petrosal nerve

Question 10

How does V3 get in the infratemporal fossa?

Answer 10

foramen ovale

Question 11

What does V3 carry?

Answer 11

sensory and motor

Question 12

what two branches of V3 are given off in the infratemporal fossa?

Answer 12

reccurent meningeal branch(nervus spinosum), and medial pterygoid nerve

Question 13

what does the reccurent meningeal branch re-enter the cranium through?
what does it carry?

Answer 13

• foramen spinosum

- sensory from dura of middle & anterior cranial fossa, & calvarium

Question 14

what does medial pterygoid n. supply?

what does it give rise to?

Answer 14

• motor to med. pterygoid muscle.

- fibers that pass through otic ganglion & supply tensor muscles

Question 15

what does anterior(mostly motor) division of V3 give rise to? what do these supply or carry

Answer 15

• masseter nerve-> motor-masseter sensory-temporomandibular jt.
• deep temporal nerve-> motor- a&p branch supply temporalis
• lateral pterygoid n.->motor- lat. pterygoid muscle
• buccal n.->sensory-cheek and buccal gingivae of molars

Question 16

what does the posterior division of v3 give rise to? what do these supply or carry?

Answer 16

-the auriculotemporal nerve-
sensory- skin of temple & ear
additional- carries post. ganglionic para fibers from otic ganglion, nerve passes through parotid gland

-lingual nerve-
sensory- mucosa of oral cavity
additional- combines w/ chorda tympani(VII)

inferior alveolar nerve- sensory- lower teeth & chin
motor- mylohyoid, ant. belly digastric
branches:
incisive branch-incisors,canines,1st premolars and adjacent gingivae
mental nerve- labial gingivae adjacent to incisors, skin of lower lip & chin

Question 17

what does the submandibular ganglion receive?

Answer 17

pregang fibers from CN VII via lingual n. after combining w/ chorda tympani

Question 18

what does the otic ganglion send?

Answer 18

postganglionic fibers to parotid via auriculotemporal n.