Human body overview & nervous system

prevents their species from becoming extinct

the location at which a neuron can transfer an impulse to another cell

Light first passes through this transparent, protective covering begins focusing

Protects organs & produces blood cells

carry impulses from sense organs to brain

carry impulses from brain to muscles/glands

controls heart rate, breathing, swallowing

long fiber that carries impulses away from cell body

barrier against Infection , helps regulate body temp & produces vitamin D

Fights off foreign invaders in the body

(lipids) insulating membrane around axon

Transmitsthe impulse to the brain

Transport materials to and from cells

carry impulses toward the cell body

thin membrane that picks up the vibrations that enter

Control center for recognitionand analysis of hunger, thirst, fatigue, anger, body temp

stores and carries WBC’s that fight disease & collects excess fluid and returns it to blood

receives vibrations from the stirrup and changes it to a pressure wave

Responseto a mechanical stimulus detectpressure, pain, heat, cold

neural “switchboard”

Completes focusing of the light ray

Takes in oxygen and removescarbon dioxide and water

“Master Gland”

removes waste products from cellular metabolism

digest food into smaller molecules and absorbnutrients

nerve impulse produce in cochlea sent to brain

Fluid-filled structure lined with tiny hairs cells, produce nerve impulses

Receives messages fromall sensory receptors throughout body

Site of intelligence, learning and judgment

Holethat light passes through

Coordinates and balances actions of muscles so body can gracefully and efficiently

gathers and interprets information & responds to information

monitor the position of your body, especially your head, in relation to gravity

chemicals used by a neuron to transmit an impulse across a synapse to another cell

Regulates body activities using hormones