Chapter 5 Part 3

Question 1

Part of the brain that regulates major life functions such as heartbeat and respiration, mediating head and neck reflexes via cranial nerves, regulating alertness and wakefulness

Answer 1

Brainstem

Question 2

What types of reflexes are mediated by the brainstem?

Answer 2

Gag, rooting, sucking, swallowing

Question 3

Origin of the olfactory I

Answer 3

Olfactory bulb

Question 4

Origin of the optic II

Answer 4

Thalamus

Question 5

Origin of oculomotor III

Answer 5

Midbrain

Question 6

Origin of trochlear IV

Answer 6

Midbrain

Question 7

Origin of trigeminal V

Answer 7

Pons

Question 8

Origin of abducens VI

Answer 8

Pons

Question 9

Origin of facial VII

Answer 9

Pons

Question 10

Origin of vestibulocochlear VIII

Answer 10

Pons/medulla junction

Question 11

Origin of glossopharyngeal IX

Answer 11

Pons/medulla junction

Question 12

Origin of vagus X

Answer 12

Medulla

Question 13

Origin of spinal accessory XI

Answer 13

Medulla, spinal cord

Question 14

Origin of hypoglossal XII

Answer 14

Medulla

Question 15

For reflexes below the head, where does the signal register?

Answer 15

Spinal cord

Question 16

For reflexes of the head, where does the signal register?

Answer 16

Brainstem

Question 17

Which direct motor tract controls contralateral movement?

Answer 17

Lateral corticopsinal tract

Question 18

Which sensory tract sends information about pain, temperature and crude touch to the thalamus?

Answer 18

Spinothalamic

Question 19

What direct motor tract controls contralateral movement of the head/neck?

Answer 19

lateral corticobulbar tract