Final answer:
Nerve cell bodies outside of the brain and spinal cord are found in clumps known as ganglia in the peripheral nervous system.
Step-by-step explanation:
In the peripheral nervous system (PNS), outside of the brain and spinal cord, nerve cell bodies are usually found in aggregations known as ganglia.
Ganglia are of two types: sensory or autonomic. Sensory ganglia contain unipolar sensory neurons and are found on the dorsal root of all spinal nerves and associated with many of the cranial nerves. Autonomic ganglia are found in the sympathetic chain, the paravertebral or prevertebral ganglia, or in terminal ganglia near or within organs controlled by the autonomic nervous system.
When considering the anatomical regions of the nervous system, structures that contain a localized collection of neuron cell bodies are referred to as 'nuclei' within the central nervous system (CNS) and as 'ganglia' within the PNS. Meanwhile, a bundle of axons is referred to as a 'tract' in the CNS and as a 'nerve' in the PNS.