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Describe the general functions of the major systems of the human body.

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Answer:

Integumentary System: acts as a barrier to protect the body from the outside world (ie. skin, hair, and nails)

Circulatory System: carries oxygen and nutrients to cells, carries waste away from cells (ie. heart and blood vessels (veins and arteries))

Digestive System: converts food into molecules that can be used by cells (ie. mouth, esophagus, stomach, small intestine, large intestine)

Respiratory System: provides oxygen to the blood and removes carbon dioxide from the body (ie. nose, mouth, pharynx (throat), trachea, and lungs)

Immune System: fights off illness and disease (ie. lymph nodes, white blood cells, and spleen)

Muscular System: allows for movement (ie. cardiac muscles, skeletal muscles, and smooth muscles)

Nervous System: coordinates all body functions, sends signals to and from all parts of the body (ie. brain, spinal cord, and neurons)

Skeletal System: support the body, protect internal organs, store minerals (ie. bones and joints)

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