PERIPHERAL NERVOUS SYSTEM (PNS)

It is a special kind of cells that transmit and send messages all over the body.

Neurons

It is also called the plasma membrane, found in all types of cells. It also separates the interior of the cell from the outside environment.

Cell membrane

It is a thin fiber that connects neurons so that they can communicate.

Axon

small button like endings at the end of the branches

Axon Terminal

the state of the neuron when not firing a neural impulse

Resting Potential

It is a network of nerves that runs throughout the head, neck, and body.

PERIPHERAL NERVOUS SYSTEM (PNS)

Allows you to move your muscles throughout your body.

SOMATIC NERVOUS SYSTEM

Regulates certain body processes, such as blood pressure and the rate of breathing.

AUTONOMIC NERVOUS SYSTEM

Afferent: sensory neurons | Efferent: _______ neurons

Motor

Two Division of Autonomic Nervous System

Sympathetic and Parasympathetic

The finger-like cells found at the end of a neuron are called dendrites. These are tiny, branching fibers that emerge from the nerve cell' s cell body.

Dendrites

It is also known as the initial segment. A cell body that connects to the axon.

Axon Hillock

a cell membrane that wraps around the axon

Myelin

It is called the spaces between the sections of myelin sheaths

Nodes of Ranvier

an individual subtype of peripheral nervous system glial cells that contributes to the formation of the myelin sheath around nerve fibers.

Schwann cell

a small gap found at the end of the neuron.

Synapses

molecules that affect the activity of neighboring cells after being released from neurons that are firing

Neurotransmitters

positive or negative charged particles in the fluids that bathe the neuron inside and out.

Ions

name for the electrical charge generated by the ions which sends messages down the axon

Action Potential