Week 2 - Physiology

Question 1

what areas are only innervated by the SNS?

Answer 1

vascular smooth muscle, sweat glands, piloerector muscles, liver, adipose tissue, kidney

Question 2

what areas are only innervated by the PNS?

Answer 2

gastric/pancreatic secretions, lacrimal glands

Question 3

how are cholinergic receptors divided?

Answer 3

nicotinic and muscarinic, both use ACh

Question 4

how do nicotinic receptors work?

Answer 4

ligand gated cation selective

Question 5

how to muscarinic receptors work?

Answer 5

G protein linked

Question 6

What does ACh do to nicotinic receptors?

Answer 6

ALWAYS stimulates

Question 7

where can we find nicotinic receptors?

Answer 7

motor end plates of skeletal muscles
ALL postganglionic neurons of SNS and PNS
Chromaffin cells of the adrenal medulla

Question 8

What does ACh do to muscarinic receptors?

Answer 8

EITHER inhibitory or excitatory

Question 9

Where can we find muscarinic receptors?

Answer 9

ALL effector organs of the PNS

CERTAIN effector organs of the SNS (sweat glands, vascular smooth muscle of skeletal muscle)

Question 10

How do adrenergic receptors work?

Answer 10

g protein linked

Question 11

What effects adrenergic receptors?

Answer 11

NE from postganglionic neurons

E from adrenal medulla

Question 12

list the two types of adrenergic receptors and their subdivisions

Answer 12

alpha and beta, subdivided into alpha 1 and alpha 2; beta 1 and beta 2