The cholinergic receptor found on the cell membranes of smooth muscle, cardiac m

Question

The cholinergic receptor found on the cell membranes of smooth muscle, cardiac muscle, and glands is a(n) ______________ receptor. A) beta-2 B) nicotinic C) alpha-1 D) beta-1 E) muscarinic

Neurons innervating (GOING TO) the adrenal medulla release _________. The adrenal medulla secretes (or releases) mostly ________________. A) epinephrine, norepinephrine B) norepinephrine, epinephrine C) acetylcholine, norepinephrine D) acetylcholine, epinephrine

According to Lecture, an _________ binds to a receptor and ________________ a response. A) agonist, does not cause B) antagonist, causes C) agonist or antagonist, does not cause D) antagonist, does not cause

Select the LEAST correct or NOT a correct match. A) adrenegic receptor found on lung airways -beta-2 B) adrenegic receptor found on the heart -beta-1 C) receptors blocked by atropine -nicotinic D) blood vessel constriction is caused by stimulation of these receptors -alpha-1

Explanation / Answer

1.E

muscarinic receptors

a cholinergic receptor, binds ACh, found on effector cell membranes (smooth muscle, cardiac muscle, glands), is metabotropic meaning the receptor acts through a second messenger, binding of ACh causes excitation of inhibition of target through G-protein coupled mechanism
(M1, M2, M3, M4, M5,)

2.B

3.A

Agonist

a ligand that elicits a cellular response upon binding to a receptor and producing a molecular response (conformational change)

4.C

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