AP PSYCHOLOGY

Detailed explanation-1: -Nerve cells are also called neurons. Neurons are present all over your body, especially in your brain and spinal cord. Nerves, together with your brain and spinal cord, are the foundation of your nervous system.

Detailed explanation-2: -The tongue, lips, and fingertips are the most touch-sensitive parts of the body, the trunk the least. Each fingertip has more than 3, 000 touch receptors, many of which respond primarily to pressure. The lips have more sensory nerves than any other part of the body.

Detailed explanation-3: -Summary. The nervous system uses electrical and chemical means to help all parts of the body to communicate with each other. The brain and spinal cord make up the central nervous system. Nerves everywhere else in the body are part of the peripheral nervous system.

Detailed explanation-4: -The basic unit of communication in the nervous system is the nerve cell (neuron). Each nerve cell consists of the cell body, which includes the nucleus, a major branching fiber (axon) and numerous smaller branching fibers (dendrites).