NERVOUS SYSTEM

It regulates and coordinates the activities of all body organ systems.

Is made up of countless nerve cell or neurons.

The basic unit of structure and function of the nervous system.

Messages are carried from one neurons to other neurons by what?

A message carries away from the cell body is transferred through where?

Is almost a meter in length and microscopically thin.

A fatty substance that surrounds the axon of some nerve cells, forming an electrical insulating layer.

Occurs along a myelinated axon where the axolemma is exposed to the extracellular space.

This contains synapses, specialized structures where neurotransmitter chemicals are released to communicate with the target neurons.

These are known for their roles in supporting nerve regeneration.

The structure that receives information from the environment are called what?

All information about what is happening in the outside world or within the body itself is brought to where?

The center of the nervous system.

Controls basic functions such as breathing rate and heartbeat, hearing, and vision.

Controls balance or equilibrium and locomotion.

Regulates mental functions such as understanding, remembering, speaking, learning, reasoning, and feeling emotions.

Monitors your body’s internal temperature.

Helps you remember things that happened recently.

Release hormones, special chemicals that trigger specific actions.

Extends from the brain to into the spine through a canal encased in a bone.