ANS Receptors

Question 1

alpha 1 (symp 1) 
             (para 1)

Answer 1

symp
IP3
vascular smooth muscle
vasoconstriction

para
IP3
GI tract
decr AP; decr motility

Question 2

M1 (para 2)

Answer 2

para
IP3
blader
contraction; urine removed

para
IP3
gastric secretions
secretion

Question 3

M3 (sym 2)

(para 2)

Answer 3

symp
IP3
sweat glands
incr secretions

symp
IP3
vasc endothelial cells
vasodilation @ smooth mm

para
IP3
GI tract
vasoconstriction; increased motility

para
IP3
secretory
incr secretion

Question 4

beta 2 (3)

Answer 4

symp
incr cAMP–PKA
skel mm in arterioles
vasodilation

symp
incr cAMP–PKA
metabolic pancreas
incr insulin release

symp
incr cAMP–PKA
bronchiolar smooth mm
vasodilation

Question 5

beta 1 (3)

Answer 5

symp
incr cAMP–PKA
pacemaker cells
inc heart rate

symp
incr cAMP--PKA
cardiac myocyes
inc IS
inc rate of relaxation
dec AV nodal delay
dec AP duration

symp
incr cAMP–PKA
metabolic: liver
increase usable glusose

Question 6

alpha 2 (3)

Answer 6

symp
decr cAMP–PKA
presynapse
decr Ach release

symp
decr cAMP–PKA
vascular smooth mm
vasoconstriction

symp
decr cAMP–PKA
metabolic

Question 7

M2 (4)

Answer 7

para
decr cAMP–PKA
pacemaker cells
dec Heart rate

para
direct G-coupled prtns
pacemaker cells
hyperpolariztion

para
decr cAMP–PKA
cardiac mycocytes
decr IS

para
direct G-coupled prtns
cardiac mycocytes
hyperpolariztion