AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

BIOLOGICAL PSYCHOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Clusters of neural cell bodies in the CNS are called
A
neurons
B
ganglia
C
nerves
D
nuclei
Explanation: 

Detailed explanation-1: -In the CNS, a cluster of functionally related nerve cell bodies is most commonly called a nucleus (plural, nuclei); cell bodies that are arranged in a layer may be called a layer, lamina, or stratum, and columnar groups of cell bodies may be called columns.

Detailed explanation-2: -In neuroanatomy, a nucleus (plural form: nuclei) is a cluster of neurons in the central nervous system, located deep within the cerebral hemispheres and brainstem. The neurons in one nucleus usually have roughly similar connections and functions.

Detailed explanation-3: -Ganglia. Ganglia are clusters of nerve cell bodies present outside the CNS. The nerve cell bodies are clustered together in these structures and their axons reach different parts of the organ.

Detailed explanation-4: -In the brainstem, there are about 18 cranial nerve nuclei comprising of 10 motor cranial nerve nuclei and 8 sensory cranial nerve nuclei. The functions of those cranial nerves are suggestive of the functions of the parts of the brainstem they are located.

Detailed explanation-5: -Clusters of cell bodies found in the CNS are called nuclei.

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