Receptors and affects on body

Question 1

M2 location and action

Answer 1

Heart - lower rate/force of contraction

Question 2

M3 locations and action

Answer 2

Smooth muscle - contracts
Glands - secretion
Endothelial cells - increase EDRF release

Question 3

NN locations and action

Answer 3

Postganglionic neurons - excitation
Adrenal glands - secretion
CNS - excitation

Question 4

NM location and actions

Answer 4

Skeletal muscle - contraction

Question 5

a1 location and action

Answer 5

smooth muscle cells- contraction

Question 6

a2 location and action

Answer 6

SNS nerve terminals - lower NE
PSNS nerve terminals (high in GI tract) - lower ACh

Question 7

B1 location and action

Answer 7

Heart - increase rate/force o contraction

Question 8

B2 location and action

Answer 8

Smooth muscle cells - relaxation
(blood vessels supplying sk. muscle, bronchial tree, uterine, GI and bladder walls)

Question 9

B3 location and action

Answer 9

Fat cells - increase lipolysis

Question 10

Receptors affect on the pupil

Answer 10

M3- contraction of sphincter - constrict pupil
a1 - contraction of dilator - dilate pupil

Question 11

Receptor affects on aqueous humour and intraocular pressure

Answer 11

REMOVAL:
M3- contraction of ciliary muscle - increase drainage
PRODUCTION:
a- decrease secretion
(decrease pr.)
B-increase secretion (increase pr.)

Question 12

Receptors affect on heart

Answer 12

M2- lower heart rate
B1 - increase heart rate

Question 13

Receptors affect on blood vessels (not skeletal muscle)

Answer 13

M3- vasodilation
a1- vasoconstriction

Question 14

Receptors affecting blood vessels (skeletal muscle)

Answer 14

B2- vasodilation

Question 15

Receptors affecting most organ systems/glands (Ex.lungs)

Answer 15

M3- contraction –> increase activity –> increase secretion
B2 - relaxation of sm muscle

Question 16

Muscarinic: PSNS or SNS

Answer 16

PSNS, and sweat glands

Question 17

Nicotinic: PSNS or SNS

Answer 17

PSNS and SNS, sk. muscle contract