Which of the following kind of neurons are NOT cholinergic? Motor neurons. Post-

Question

Which of the following kind of neurons are NOT cholinergic? Motor neurons. Post-ganglionic sympathetic neurons. Post-ganglionic parasympathetic neurons. Pre-ganglionic sympathetic neurons. Pre-ganglionic parasympathetic neurons. Curate is a plant extract used as an arrow poison by native inhabitants of the Amazon and Orinoco valley, and in the Guiana's. The active ingredient, (+)-tubocurarine chloride, is lethal to man and animals at dose of about 1 mg/kg body weight. it blocks the receptors at the neuromuscular junction of skeletal muscles, and produces paralysis. However, it has no effect on activity of cardiac muscle. The most likely direct reason for This difference is that Cardiac muscle has muscarinic receptors;, not norepinephrine receptors. The heart receives no significant nerve input from the central nervous system. Skeletal muscle has a greater exposure to the toxin - containing circulating Each cardiac muscle cell i stimulated internally, not from external triggers. Skeletal muscle cells are not connected by gap junctions as cardia cells. Which of the following nucleic acids is NOT a pyrimidine? cytosine. thymine.

Explanation / Answer

4. B. postganglionic sympathetic neurons

postganglionic sympathetic neurons are non-noradrenergic, non-cholinergic neurons ( they neither use  acetylcholine, norepinephrine, or epinephrine for signaling).

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