ANS + SNS

Question 1

Preganglionic efferent pathways

Answer 1

Cell bodies in CNS
Thinly myelinated
Contains ACh

Question 2

Postganglionic efferent pathways

Answer 2

Cell bodies in PNS
Unmyelinated
ACh in PANS
NE in SANS

Question 3

B2 receptors are unique to

Answer 3

Epinephrine

Question 4

NE activates

Answer 4

A1, A2, B1

Question 5

ANS control of BP: Baroreceptor reflexes

Answer 5

Controls HR, contractility, TPR
Receptors are located in carotid sinuses and aortic arch–sense stretch and fire when BP is increased due to increased stretch

Question 6

Reflex bradycardia

Answer 6

Increased BP causes CNS to release ACh and bind to nicotinic N receptors; ACh binds to M2 receptors causing a decrease in HR

Question 7

Reflex tachycardia

Answer 7

Decreased BP causes CNS to release ACh and bind to Nicotinic N receptors; ACh binds to M2 receptors and causes increase in HR and increased TPR

Question 8

How to block baroreceptor reflex

Answer 8

Blocking N and M receptors–mainly anti- muscarinic drugs

Question 9

If body responds to anti-hypertensive drugs with reflex tachycardia…

Answer 9

Give a beta blocker

Question 10

Endocrine control of BP

Answer 10

RAAS system

Question 11

Why would diuretics be given in anti hypertensive regimen

Answer 11

Because renal reflex to lower blood pressure may cause salt and water retention due to RAAS system activation

Question 12

PANS effect on pupil

Answer 12

Constriction of sphincter muscle; pupillary constriction (miosis)
M agonists
a1 antagonists
Increased accommodation due to M agonist

Question 13

SANS effect on pupil

Answer 13

Constriction of radial muscle; pupillary dilation (mydriasis)
M antagonists
a1 agonists
Decreased accommodation due to M antagonist

Question 14

Blurry vision is a hallmark for

Answer 14

not being able to accommodate

Question 15

Constricted pupil + Good accommodation=

Answer 15

M agonist