Preganglionic neurons of both the parasympathetic and sympathetic nervous system

Question

Preganglionic neurons of both the parasympathetic and sympathetic nervous systems release the neurotransmitter acetylcholine. Parasympathetic postganglionic neurons release the neurotransmitter acetylcholine. Sympathetic postganglionic neurons release the neurotransmitter norepinephrine. The neurotransmitter acetylcholine can bind to two types of cholinergic receptors: (1) muscarinic receptors, named after a fungal toxin, and (2) nicotinic receptors, named after a tobacco toxin. The _______ receptors are found on the postganglionic neurons located in the autonomic ganglia. These receptors produce _________ responses in the postganglionic neurons. The ________ receptors are found on effector cells at the synapses of all parasympathetic postganglionic fibers with their effectors.

Explanation / Answer

First stamen is correct.

In second stamtemnt postganglionin sympathetic neurion secretes epinephrine and norepinephrine.

Third statement is correct.

The nicotinic receptors are found on postganglionin neurons …………….produce acetylcholine responses…….neurons.

The muscarinic receptors are found on effector cells at the synapses of all parasympathetic postganglionin fibers with their effectors.

The neurotransmitter.....……………..adrenergic receptors 1) the -adrenoreceptor for vasoconstriction and (2) -adrenoreceptors for vasodilation.

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