Nervous System

• Receives information about what happens inside out out of the body
• Directs how your body responds
• Helps maintain homeostasis

cell that carries information through the nervous system

The message that a neuron carries.

Carries impulses towards the cell body.

carries impulses away from the cell body.

Nerve fibers arranged in parallel bundles covered by connective tissue

picks up stimuli from internal and external environment and converts it to a nerve impulse.

carries nerve impulses from one neuron to another.

sends an impulse to a muscle and the muscle contracts

• a tiny space between each axon tip and the next structure.
• when a nerve impulse reaches the end of the axon chemicals are released into the synapse which enables the nerve impulse to cross the synapse

• The central nervous system is the control center of the body
• Brain-controlls most functions of the body
• Spinal Cord-nerve tissue that links the brain to most of the nerves in the peripheral

It travels from the peripheral nevous system through the spinal cord to the brain. Brain directs a response back through the spinal cord and back to the peripheral nervous system

The brain contains 100s of billions of neurons that are all interneuron.

• The skull
• Layers of connective tissue
• Fluid

A bundle of nerve fibers covered with connective...

• Axon
• &
• Dendrites

Sends nerve impulses to other cells.

It controlls involuntary actions