Anatomy and Physiology XXII

Question 1

What is controlled by the nucleus ambigiuus?

Answer 1

Motor innervation of the pharynx, larynx, and upper esophagus (e.g. swallowing, palate elevation) (p.435)

Question 2

What cranial nerves receive innervation from the nucleus ambiguus of the vagal nuclei?

Answer 2

CN IX, X (p.435)

Question 3

What cranial nerve receives innervation from the dorsal motor nucleus of the vagal nuclei?

Answer 3

CN X (p.435)

Question 4

What is the function of the dorsal motor nucleus?

Answer 4

To send sutonomic (parasympathetic) fibers to the heart, lungs, and upper GI (p.435)

Question 5

What is the principle difference in functions controlled by the nucleus solitarius vs nucleus ambiguus?

Answer 5

Nucleus solitarius- visceral sensory information; nucleus ambiguus- motor innervation (p.435)

Question 6

Through where does CN I travel?

Answer 6

Through the cribiform plate (p.435)

Question 7

Through what general area do CN II-VI travel?

Answer 7

Middle cranial fossa through the sphenoid bone (p.435)

Question 8

Through what opening does CN II travel?

Answer 8

Optic canal (p.435)

Question 9

Through what opening does the opthalmic artery travel?

Answer 9

Optic canal (p.435)

Question 10

Through what opening does the central retinal vein travel?

Answer 10

Optic canal (p.435)

Question 11

Through what opening does CN III travel?

Answer 11

Superior orbital fissure (p.435)

Question 12

Through what opening does CN IV travel?

Answer 12

Superior orbital fissure (p.435)

Question 13

Through what opening does CN V (opthalmic branch) travel?

Answer 13

Superior orbital fissure (p.435)

Question 14

Through what opening does CN VI travel?

Answer 14

Superior orbital fissure (p.435)

Question 15

Through what opening does the opthalmic vein travel?

Answer 15

Superior orbital fissure (p.435)

Question 16

Through what opening do sympathetic fibers travel?

Answer 16

Superior orbital fissure (p.435)

Question 17

Through what opening does CN V (maxillary branch) travel?

Answer 17

Foramen Rotundum (p.435)

Question 18

Through what opening does CN V (mandibular branch) travel?

Answer 18

Foramen ovale (p.435)

Question 19

Through what opening does the middle meningeal artery travel?

Answer 19

Foramen spinosum (p.435)

Question 20

Through what opening does CN VII travel?

Answer 20

Internal auditory meatus (p.435)

Question 21

Through what opening does CN VII travel?

Answer 21

Internal auditory meatus (p.435)

Question 22

Through what opening does CN IX travel?

Answer 22

Jugular foramen (p.435)

Question 23

Through what opening does CN X travel?

Answer 23

Jugular foramen (p.435)

Question 24

What travels through the optic canal?

Answer 24

CN II, opthalmic artery, central retinal vein (p.435)

Question 25

What travels through the superior orbital fissure?

Answer 25

CN III, IV, V (opthalmic branch), VI, opthalmic vein, sympathetic fibers (p.435)