Final answer:
The term 'ganglion' refers to a cluster of neuron cell bodies in the PNS, whereas the 'brain' is a complex central organ of the CNS. Therefore, it is false to consider them equivalent.
Step-by-step explanation:
The assertion that the term "ganglion" is equivalent to "brain" is false. A ganglion is actually a cluster of neuron cell bodies located within the peripheral nervous system (PNS), as opposed to the central nervous system (CNS) where the brain is a primary component. The CNS consists of the brain and spinal cord, while structures like ganglia and nerves are part of the PNS. In the CNS, similar clusters of neuron cell bodies are referred to as nuclei.
Ganglia serve as relay points and intermediaries for neural signals. For example, the trigeminal ganglion is associated with a cranial nerve and resides outside the skull, contrasting with the brain which includes various lobes and structures, such as the cerebellum and brainstem. While both ganglia and the brain are crucial for nervous system function, they are distinct entities with different anatomical and physiological roles.