lecture 12- autonomic nervous system

Question 1

autonomic nervous system examples of organs

Answer 1

heart, GI tract, blood vessels

Question 2

divisions of the autonomic nervous sysem

Answer 2

sympathetic (fight or flight)
parasympathetic (rest and digest)

Question 3

sympathetic

Answer 3

fight or flight

Question 4

parasympathetic

Answer 4

rest and digest

Question 5

antagonistic control

Answer 5

one autonomic branch is inhibitory, one is excitatory and they can alternate depending on the task

Question 6

nuclei are located

Answer 6

in the CNS

Question 7

ganglia are located

Answer 7

outside the CNS

Question 8

sympathetic neuron origins in the CNS

Answer 8

thoracic and lumbar

Question 9

sympathetic ganglion location

Answer 9

close to spinal cord

Question 10

sympathetic neuron lengths (1 and 2)

Answer 10

short preganglionic neuron
long postganglionic neuron

Question 11

parasympathetic neuron origin in the CNS

Answer 11

cranial and sacral

Question 12

parasympathetic ganglion location

Answer 12

on or close to target (further from spinal cord)

Question 13

parasympathetic neuron lengths (1 and 2)

Answer 13

long preganglionic
short postganglionic

Question 14

sympathetic: what postganglionic neurotransmitter is released

Answer 14

norepinephrine

Question 15

parasympathetic: what postganglionic neurotransmitter is released

Answer 15

acetylcholine (ACh)

Question 16

preganglionic neuron always releases

Answer 16

ACh in both pathways

Question 17

muscarinic receptor

Answer 17

=GPCR bound by ACh

Question 18

adrenergic receptor

Answer 18

GPCR bound by norepinephrine (found in sympathetic responses)

Question 19

Ionotropic response

Answer 19

involves ion channels
excitatory because Na+ “wins”

Question 20

Metabotrobic response

Answer 20

GPCR, slower

Question 21

Variscosities

Answer 21

axon terminus turned into “balloons on a chain”
- can spit neurotransmitter out over a large region
-specialized tissue

Question 22

Norepinephrine (NE) would be

Answer 22

sympathetic

Question 23

adrenal medulla is known as

Answer 23

the secret sympathetic pathway to get epinephrine

Question 24

adrenal gland consists of

Answer 24

adrenal cortex (outside)
adrenal medulla (inside)

Question 25

chromaffin cells=

Answer 25

modified post ganglionic neurons “trapped in the hat”

-excitatory
-release epinephrine into blood stream
-acts anywhere there is a receptor for epinephrine or norepinephrine (adrenergic receptor)