Question

Which is the smallest functional unit of the nervous system?. a. a nerve. b. a neuron. c. a receptor

Answer 1

The smallest functional unit of the nervous system is a neuron. Neurons are specialized cells that transmit electrical and chemical signals within the nervous system.

Step-by-step explanation:

The smallest functional unit of the nervous system is a neuron. Neurons are specialized cells that transmit electrical and chemical signals within the nervous system. They have a distinct structure, with dendrites receiving signals, a cell body where the signal is integrated, and an axon that transmits the signal to other neurons or target cells.

Answer 2

The correct answer would be option b. A neuron. The smallest functional unit of the nervous system is a neuron. A neuron is a specialized cell which transmits impulses. It processes and sends information through chemical and electrical signals. Neurons are the cells that  make up the nervous system.