Nerve Cell Diagram

Dendrite

Branchlike parts of a neuron that are specialized to receive information.

Axon Terminal

Branchlike part of a neuron that sends information

Cell Body

The area of a nerve that has houses the nucleus and major organelles.

Nucleus of Schwann Cell

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Axon

Long fiber that carries impulses away from the cell body of a neuron

Node of Ranvier

A gap between successive segments of the myelin sheath where the axon membrane is exposed.

Myelin Sheath

a layer of fatty tissue encasing a neuron's axon that speeds transmission

Nucleus

Control center of a nerve

Peripheral Nervous System

the sensory and motor neurons that connect the central nervous system to the rest of the body

Central Nervous System

Brain and spinal cord

Sensory Nerve

Nerves that carry sensory information

Motor Neuron

Delivers the nervous stimulus that causes the muscle tissue to contract

Internueron

A neuron that carries nerve impulses from sensory neurons to motor neurons

Autonomic Nervous System

Region of the nervous system that controls the unconscious reactions to stimulus and maintains homeostasis in the body.

Steps to a reflex arc

Stimulus
sensory neuron signal
interneuron relay
Motor neuron signal
Muscle activation

Ganglion

A mass of nerve cells

Afferent Neuron (sensory)

Nerves which carry information from sensory receptors to the central nervous system

Efferent Neuron (motor)

Nerves which convey information to the muscle and glands from the central nervous system.