Lower Medulla (pg. 82)

Question 1

function of hypoglossal nuclei (12)

Answer 1

ipsi. motor control of tongue

Question 2

input of hypoglossal nuclei (12)

Answer 2

ipsi descending motor tracts from the cerebral cortex

Question 3

output of hypoglossal nuclei (12)

Answer 3

ipsi tongue muscles (CN XII)

Question 4

function of ambiguous (9-11) nuclei

Answer 4

ipsi. motor control of larynx and pharynx

Question 5

input of ambiguous (9-11) nuclei

Answer 5

descending motor tracts from cerebral cortex

Question 6

output of ambiguous (9-11) nuclei

Answer 6

muscles of larynx and pharynx (CNs IX, X, XI)

Question 7

function of spinal trigeminal (5) 
note: equivalent to spinothalamic tract

Answer 7

ipsi pain and temp from head

Question 8

input of spinal trigeminal (5)

note: equivalent to spinothalamic tract

Answer 8

ipsi. peripheral receptors for pain and temperature

Question 9

output of spinal trigeminal (5)

note: equivalent to spinothalamic tract

Answer 9

contra. VPN (ventral posterior medial nucleus) of thalamus

Question 10

function of medial longitudinal fasiculus 
(vestibulospinal tract)

Answer 10

ipsi. balance and posture

Question 11

input of medial longitudinal fasiculus

vestibulospinal tract

Answer 11

ipsi. brainstem medial vestibular nucleus

Question 12

output of medial longitudinal fasiculus

vestibulospinal tract

Answer 12

ipsi. motor neurons in spinal cord

Question 13

function of tectospinal tract

Answer 13

contra. reflex postural movement

Question 14

input of tectospinal tract

Answer 14

ipsi. tectum (superior colliculus)

Question 15

output of tectospinal tract

Answer 15

contra. motor neurons in spinal cord