Select the statement that is most correct. a. the dorsal root ganglion is a motor-only structure. b. the cell bodies of afferent ganglia are located in the spinal cord. c. ganglia are collections of neuron cell bodies in the spinal cord that are associated with efferent fibers. d. ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons.

The most correct statement is d. Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons.

Explanation:

Ganglia are considered a group of nerve cell bodies and are responsible for carrying nerve impulses. The sensory nerve ganglion collects and modulates the sensory information, and constitutes the deposits of the neuronal somas of the primary afferent fibers of the sensory system. This consists of afferent nerve cell bodies, efferent nerve cell bodies, and neuronal axons. It acts by receiving signals from the periphery and sending them to the brain, that is, it has an afferent function. Afferent fibers transmit sensory stimuli from the skin, mucous membranes and deep structures, for this, ganglia are constituted by abundant distinctive neuronal connections, which are responsible for receiving these signals and fulfilling their afferent function.

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