Receptors Flashcards
1
Q
Alpha-1
A
Vasoconstriction of arteries & veins
2
Q
Alpha-2
A
Insulin restriction, Glucagon secretion, Inhibition of norepinephrine release
3
Q
Beta-1
A
Increased heart rate( chronotropic effect)
Increased myocardial contractility( inotropic effect)
Increased myocardial conduction( dromotropic effect)
Renin secretion for urinary retention
4
Q
Beta-2
A
Bronchus & bronchiole relaxation
Insulin secretion
Uterine relaxation
Arterial dilation in certain key organs
5
Q
Dopaminergic
A
Vasodilation of renal and mesenteric arteries
Numerous receptor subtypes exist
6
Q
Nicotinic
A
Present at the neuromuscular junction Allows Acetylcholine( Ach) to stimulate muscle contraction
7
Q
Muscarinic-2
A
Present in the heart
Activated by Ach to offset sympathetic stimulation
Decreases heart rate, contractility & conduction velocity
