Exam 2: ANS

Question 1

What does the parasympathetic nervous system maintain?

Answer 1

digestive, urinary, respiratory,reproductive

Question 2

Where does the 1st neuron originate ?

Preganglionic

Answer 2

Preganglionic originates in the CNS in the lateral horn

Question 3

where does the 2nd neuron originate?

Answer 3

meets the 1st autonomic ganglion, postganglionic neuron

Question 4

What happens to Preganglionic neuron’s axon?

LH VR SN

Answer 4

it leaves the lateral horn,travels through ventral root into Spinal nerve

Question 5

What happens to postganglionic neuron’s axon?

GR, SN, EO

Answer 5

leaves the chain through the gray ramus, enters spinal nerve, effector organ above diaphragm

Question 6

where do preganglionic neurons in the parasympathetic nervous system orignate?

Answer 6

brain stem ( cranial nerve VII, IX, X) and sacral ( S2, S3, S4)

Question 7

where do preganglionic neurons in the sympathetic nervous system originate?

Answer 7

thoracic ( T1- T12) and lumbar ( L1-L2)

Question 8

What happens when chromaffin cells of the adrenal medulla cells are stimulated?

Answer 8

release 80% epinephrine and 20% norepinephrine

Question 9

What receptor is released by all preganglionic neurons and all postganglionic neurons

ACOA

Answer 9

Acetylcholine

Question 10

the ganglia infront of the spinal cord are called?

Answer 10

Collateral ganglia

Question 11

What is the function of Alpha receptors?

Answer 11

they have a greater affinity to norepinephrine than epinephrin. they are ESPS

Question 12

what neurons are norepinephrine released by?

Answer 12

Almost all sympathetic postganglionic neurons except salivary glands

Question 13

What happens when a neurotransmitter binds to nicotinic receptor?

Answer 13

it will cause depolarization/ ESPS

Question 14

where are nicotinic receptors found?

Answer 14

they are found on cell bodies and dendrites of ALL postganglionic sympatheticand parasympathetic neurons

Question 15

what is the function of a nicotinic receptor?

Answer 15

allows travels all the way to the effector organ chromatin cells of the adrenal medulla

Question 16

what happens when neurotransmitters bind to muscarnic recpetors?

Answer 16

cause either a ESPS or IPSP response

Question 17

where are muscarinic receptors found?

Answer 17

on the effector organs of the parasympathethic system

Question 18

what is the function lg muscarinic recpetors?

Answer 18

controls heart smooth muscle and the diameter of the pupil

Question 19

what are the two primary neurotransmitters released?

Answer 19

acetylcholine and norepinephrine

Question 20

where does the sacaral spinal cord originate?

Answer 20

the preganglionic neuron origantes in the lateral gray matter lf the sacral cord. their axons use the pevlic splanchnic nerves to get a terminal or intramural ganglia og organs in the pelvic cavity

Question 21

what does cranial nerve III control?

oculomotor

Answer 21

smooth muscle in the eye for changing pupil shape and size also focusing the lens

Question 22

what does cranial nerve VII control?

facial

Answer 22

the 2 pairs of salivary glands

Question 23

what does cranial nerve III control?