Structural and functional unit of nervous system is

• A. Nephron
• B. Cyton
• C. Neuron
• D. Axon

The structural and functional unit of the nervous system is the neuron. Neurons are specialized cells that transmit information throughout the body via electrical and chemical signals.

Key Features of Neurons

• Structure: Neurons consist of a cell body (cyton), dendrites, and an axon.
• Function: They are responsible for receiving stimuli and sending signals to other neurons or muscles.

Other Options Explained

To clarify the other choices:

• Nephron: This is the functional unit of the kidney, not the nervous system.
• Cyton: This refers to the cell body of a neuron but is not the entire unit.
• Axon: This is part of a neuron that transmits signals but does not represent the whole unit.

In summary, the correct answer is C. Neuron, as it encompasses the entire functional unit of the nervous system.