2-1 brainstem & cranial nerves

Question 1

brainstem functions

Answer 1

conduit connecting the spinal cord to the forebrain

Question 2

midbrain

Answer 2

vision, hearing, motor control, sleep/wake , & temp regulation

Question 3

pons

Answer 3

contains tracts that carry signals from cerebrum to medulla & cerebellum

also tracts that carry sensory signals to the thalamus

Question 4

medulla

Answer 4

contains the cardiac, respiratory, vomiting

heart rate, breathing, & blood pressure

Question 5

ventral

Answer 5

motor

Question 6

pes pedunculi / cerebral peduncles

Answer 6

striations make a “v” for ventral view

white matter tracts connect from pons to cerebellum

Question 7

pyramidal decussation

Answer 7

where motor fibers cross

Question 8

dorsal

Answer 8

sensory

Question 9

colliculus

Answer 9

little hills

dorsal

Question 10

superior & inferior colliculus

Answer 10

vision & hearing

Question 11

what do darker areas on the brain stem indicate

Answer 11

motor tracts

presence of myelin makes it appear darker

Question 12

afferent nerve

Answer 12

Arrive

sensory

take in sensory info from periphery & taken into dorsal spinal cord

Question 13

efferent nerve

Answer 13

Exit

motor

exit CNS & innervate muscles

reflexes (touch a hot stove)

motor or sensory