Which of the following is true? a. all sympathetic preganglionic fibers synapse in the sympathetic chain ganglion b. collateral ganglia contain preganglionic neuron cell bodies c. all parasympathetic preganglionic fibers are cholinergic d. b and c e. a,b and c
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Which of the following is true of the sympathetic nervous system? A. The preganglionic neuron releases ACh, which binds to muscarinic ACh receptors on the postganglionic neuron; and the postganglionic neuron releases ACh, which binds to nicotinic ACh receptors on the effector tissue. B. The preganglionic neuron releases norepinephrine, which binds to alpha receptors on the postganglionic neuron; and the postganglionic neuron releases ACh, which binds to muscarinic ACh receptors on the effector tissue. C. The preganglionic neuron releases ACh, which binds to nicotinic ACh receptors on the postganglionic neuron; and the postganglionic neuron releases norepinephrine, which binds to alpha receptors on the effector tissue. D. The preganglionic neuron releases ACh, which binds to nicotinic ACh receptors on the postganglionic neuron; and the postganglionic neuron releases ACh, which binds to muscarinic ACh receptors on the effector tissue.
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Which statement about the autonomic nervous system is true? $a .$ The sympathetic division is afferent, and the parasympathetic division is efferent. b. The transmitter norepinephrine is always excitatory, and acetylcholine is always inhibitory. $c .$ Each pathway in the autonomic nervous system includes two neurons, and the neurotransmitter of the first neuron is acetylcholine. $d .$ The cell bodies of many sympathetic preganglionic neurons are in the brain stem. $e .$ The cell bodies of most parasympathetic postganglionic neurons are in or near the thoracic and lumbar spinal cord.
Which of these statements about autonomic neurons is correct? a. They are motor neurons. b. Preganglionic neurons have cell bodies in the $\mathrm{CNS}$. c. Postganglionic neurons innervate smooth muscles, cardiac muscle, and glands. d. All of these are correct.
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