Ex2 L3 ANS

Question 1

Parasympathetic and sympathetic NS are part of which system

Answer 1

Efferent

Question 2

Under subconscious control of ANS

Answer 2

Smooth muscle, cardiac muscle, glands

Question 3

Which system should be in control most of time?

Answer 3

Parasympathetic NS

Question 4

Sensory arm of ANS

Answer 4

Autonomic afferent fibers

Question 5

Target cell of ANS

Answer 5

Smooth muscle, cardiac muscle, glands

Question 6

Reference point of ANS

Answer 6

Ganglion

Question 7

First synapse in ANS

Answer 7

At ganglion

Question 8

Second synapse in ANS

Answer 8

Target cells

Question 9

PNS maintains baseline function how

Answer 9

Highly adapted for very discrete stimulation of one organ vs another depending on needs at the time

Question 10

Anatomically adapted

Answer 10

Sympathetic NS

Question 11

Sympathetic nervous system functions how

Answer 11

Global activation

Question 12

How are PNS/SNS different?

Answer 12

PNS = discrete
SNS = global

Question 13

Sympathetic chain ganglia

Answer 13

One on each side of spinal cord

Most of ganglionic synapse occurs here

Question 14

Peripheral ganglia

Answer 14

Celiac ganglia

Hypogastric plexus

Question 15

Preganglionic cells of sympathetic chain ganglia located

Answer 15

Cell bodies in spinal cord

Question 16

Preganglionic sympathetic cells are located

Answer 16

Lateral horn of spinal cord

Question 17

One exception to 2 synapse, 2 cell rule

Answer 17

Adrenal medulla

Question 18

Endocrine arm of sympathetic nervous system

Answer 18

Adrenal medulla

Question 19

Adrenal medulla pathway

Answer 19

One cell, one synapse

Preganglionic cell —> out of spinal cord —> moves thru celiac ganglion —> makes direct contact on adrenal medulla

Question 20

Effect of adrenal medulla in relation to SNS

Answer 20

Longer effects (hormones circulating in system)

Question 21

Most important PNS nerve

Answer 21

Vagus nerve (CN X)

Question 22

2 NT critical for ANS

Answer 22

ACh, Norepinephrine

Question 23

First synapse of ANS

Answer 23

Same for SNS/PNS: ACh binds to nicotinic receptor

Question 24

Where do PNS/SNS differ?

Answer 24

2nd synapse (between post/target cell)

Question 25

PNS binds to ____ on 2nd synapse

Answer 25

ACh binds to muscarinic receptor

Question 26

SNS releases _____ which binds to ____ on 2nd synapse

Answer 26

Neurotransmitter: Norepinephrine Receptor: A1, B1, B2

Question 27

B1 receptors are located

Answer 27

Heart

Question 28

B2 receptors

Answer 28

Prominently Smooth muscle of airways (Lungs) | Greater affinity for epi > Norepi

Question 29

B2 receptors have higher affinity for

Answer 29

Epinephrine (released from adrenal medulla)

Question 30

Albuterol is most similar to

Answer 30

Epinephrine

Question 31

Alpha 1 receptors stimulated

Answer 31

Sodium channels open Depolarizes Muscle cell - contraction

Question 32

Beta 2 receptors stimulated

Answer 32

Opens potassium channels Hyperpolarizes Muscle: relaxation

Question 33

Kidneys are only innervated by

Answer 33

Sympathetic nervous system

Question 34

Most organs are innervated by

Answer 34

Both PNS/SNS | Antagonistic effect

Question 35

Control of autonomic fxn

Answer 35

Brainstem, hypothalamus