intro to neuron

Question 1

in what nervous system are cranial and spinal nerves found

Answer 1

peripheral nervous system

Question 2

through what horn does sensory info always enter

Answer 2

dorsal horn

Question 3

that what horn does motor info always exit

Answer 3

ventral horn

Question 4

lateral spinothalamic tract controls

Answer 4

pain and temperate

Question 5

anterior spinothalamic tract controls

Answer 5

light touch and pressure

Question 6

dorsal white column controls

Answer 6

discriminative touch, proprioception, vibration

Question 7

where do pyramidal tracts begin

Answer 7

precentral gyrus

Question 8

what cranial nerves have parasympathetic action

Answer 8

oculomotor (III)
facial nerve (VII)
glossopharyngeal (IX)
vagus (X)

Question 9

oculomotor nerve parasympathetic function

Answer 9

narrows pupils
focuses lens

Question 10

facial nerve parasympathetic function

Answer 10

tears
nasal
salivary glands

Question 11

glossopharyngeal nerve parasympathetic function

Answer 11

parotid salivary gland

Question 12

vagus nerve parasympathetic function

Answer 12

decreased HR
bronchoconstriction
increases motility in up to 1/2 of colon

Question 13

sympathetic system is directed primarily by

Answer 13

limbic system
hypothalamus

Question 14

sympathetic system has a direct effect on adrenal gland causing release of

Answer 14

epinephrine and norepinephrine

Question 15

what ion causes vesicles to fuse to presynaptic membrane

Answer 15

calcium

Question 16

what neurotransmitters have both excitatory and inhibitory effects

Answer 16

acetylcholine
norepinephrine

Question 17

where does spinothalamic tract decussate

Answer 17

level of spinal cord

Question 18

where does dorsal column decussate

Answer 18

lower level of medulla

Question 19

where does corticospinal tract decussate

Answer 19

medulla

Question 20

which corticospinal tract contains 85-90% of fibers

Answer 20

lateral corticospinal tract

Question 21

what cranial nerves does the corticobulbar tract directly control

Answer 21

5
7
9
10
11
12

Question 22

what cranial nerves does corticobulbar tract indirectly control

Answer 22

3
4
6
through MLF

Question 23

where are stretch receptors found

Answer 23

aorta
carotid sinus

Question 24

dysfunction of baroreflex can cause

Answer 24

postural hypotension

Question 25

baroreflex decreases

Answer 25

sympathetic discharge

Question 26

baroreflex increases

Answer 26

parasympathetic discharge