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Mr. Mahaffey's Life Science Class at Spring View Middle School.

Muscle Tissue

A body tissue that contracts or shortens, making body parts move.

Nervous Tissue

a body tissue that carries electrical messages back and forth between the brain and every other part of the body

Connective Tissue

A body tissue that provides support for the body and connects all of its parts.

Epithelial Tissue

covers the surfaces of your body, inside and out. i.e. Skin

Organ system

a group of organs that work together to perform a major function


the process by which the body breaks down food into small nutrient molecules


organ that removes urea, excess water, and other waste products from the blood


Small filtering structure found in the kidneys that removes wastes from blood and produces urine

Urinary Bladder

a sacklike musccular organ that stores urine until it is eliminated from the body.


An organism that causes disease


a protein produced by a B cell of the immune system that destroys pathogens


the body's ability to destroy pathogens before they can cause disease


the maintenance of stable internal conditions in spite of changes in the external environment


the reaction of a person's body to potentially threatening, challenging, or disturbing events

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