Compare nicotinic receptors and muscarinic receptors
A) Nicotinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells. Muscarinic receptors are acetylcholine G protein-coupled receptors located at all parasympathetic neuromuscular and neuroglandular junctions, and at a few sympathetic neuromuscular and neuroglandular junctions.
B) Nicotinic receptors are acetylcholine G protein-coupled receptors located at all parasympathetic neuromuscular and neuroglandular junctions, and at a few sympathetic neuromuscular and neuroglandular junctions. Muscarinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells.
C) Nicotinic receptors binds epinephrine on the membrane of sympathetic target cells. Muscarinic receptors binds norepinephrine on the membrane of sympathetic target cells.
D) Nicotinic receptors binds norepinephrine on the membrane of sympathetic target cells. Muscarinic receptors binds epinephrine on the membrane of sympathetic target cells.
E) Nicotinic receptors binds norepinephrine and epinephrine on the membrane of sympathetic target cells. Muscarinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells.
Answer: A
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