Anatomy and Physiology XXI

Question 1

What is the pneumonic used to remember which CNs control sensory function, motor function, or both?

Answer 1

Some Say Marry Money But My Brother Says Big Brains Matter Most (p.434)

Question 2

Where is the general location of CN nuclei?

Answer 2

In the tegmentum portion of the brain stem (between the dorsal and ventral portions) (p.434)

Question 3

What CN nuclei are located in the midbrain?

Answer 3

CN III, CN IV (p.434)

Question 4

What CN nucle are located in the pons?

Answer 4

CN V, VI, VII, VIII (p.434)

Question 5

What CN nuclei are located in the medulla?

Answer 5

CN IX, X, XII (p.434)

Question 6

What CN nucleus is located in the spinal cord?

Answer 6

CN XI (p.434)

Question 7

What is the difference between the alar and basal plate?

Answer 7

Alar plate contains sensory nuclei; basal plate contains motor nuclei (p.434)

Question 8

What divides the alar from the basal plate?

Answer 8

The sulcus limitans (p.434)

Question 9

Describe the general location of the alar plate compared to the basal plate.

Answer 9

Alar plate is more lateral; basal plate is more medial (p.434)

Question 10

What types of CN nuclei are contained in the basal plate?

Answer 10

Motor nuclei (p.434)

Question 11

What types of CN nuclei are contained in the alar plate?

Answer 11

Sensory nuclei (p.434)

Question 12

Name the five CN reflexes.

Answer 12

Corneal, lacrimation, jaw jerk, pupillary, gag reflex (p.434)

Question 13

What nerve carries the afferent branch of the corneal reflex?

Answer 13

CN V opthalmic; nasociliary branch (p.434)

Question 14

What nerve carries the afferent branch of the lacrimation reflex?

Answer 14

CN V opthalmic. Loss of this reflex does not preclude emotional tears (p.434)

Question 15

What nerve carries the afferent branch of the jaw jerk reflex?

Answer 15

CN V mandibular. Sensory afferent caused by the muscle spindle from the masseter muscle (p.434)

Question 16

What nerve carries the afferent branch of the pupillary reflex?

Answer 16

CN II (p.434)

Question 17

What nerve carries the afferent branch of the gag reflex?

Answer 17

CN IX (p.434)

Question 18

What nerve carries the efferent branch of the corneal reflex?

Answer 18

CN VII (temporal branch- orbicularis oculi muscle) (p.434)

Question 19

What nerve carries the efferent branch of the lacrimation reflex?

Answer 19

CN VII (p.434)

Question 20

What nerve carries the efferent branch of the jaw jerk reflex?

Answer 20

CN V mandibular (motor efferent caused by masseter muscle) (p.434)

Question 21

What nerve carries the efferent branch of the pupillary reflex?

Answer 21

CN III (p.434)

Question 22

What nerve carries the efferent branch of the gag reflex?

Answer 22

CN X (p.434)

Question 23

Name the three vagal nuclei.

Answer 23

Nucleus solitarius, nucleus ambiguus, dorsal motor nucleus (p.435)

Question 24

What is controlled by the nucleus solitarius?

Answer 24

Visceral sensory information (e.g. taste, baroreceptors, gut distention) (p.435)

Question 25

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

Answer 25

CN VII, IX, X (p.435)