Which of these statements about autonomic neurons is...

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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Key Concepts

Autonomic Nervous System

The autonomic nervous system (ANS) is a division of the peripheral nervous system that controls involuntary body functions. It regulates activities such as heart rate, digestion, respiratory rate, and glandular secretion through a network of motor neurons that operate without conscious input.

Motor Neurons

Motor neurons are nerve cells that transmit signals from the central nervous system to muscles and glands, facilitating movement and physiological responses. In the context of the autonomic nervous system, these neurons control involuntary actions by innervating smooth muscles, cardiac muscle, and glands.

Preganglionic Neurons

Preganglionic neurons are the initial neurons in the autonomic pathway with their cell bodies located in the central nervous system. They send their axonal projections to autonomic ganglia where they form synapses with postganglionic neurons, initiating the decentralization of the autonomic response.

Postganglionic Neurons

Postganglionic neurons are the subsequent neurons in the autonomic nervous system that have their cell bodies located in peripheral ganglia. They receive signals from preganglionic neurons and transmit these impulses to target organs like smooth muscles, cardiac muscle, and glands, thereby effecting the final physiological responses.

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