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Human Body System Notes

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Nervous System
Detects and interprets information from the environment outside the body and from within the body.
Controls most body functions.
Major organs: brain, spinal cord, peripheral nerves.
Endocrine System
Controls many body processes by means of chemicals.
Major Organs: Glands that produce hormones.
Reproductive System
Produces sex cells that can unite to create offspring.
Major Organs:
In females, eggs are produced in the overies.
In males, sperm are produced in the testies.
Skeletal System
Supports and protects the body. Works with muscles to allow movement.
Major Organs: All Bones
Muscular System
Enables body to move. Moves food through digestive system. Keeps heart beating.
Major Organs: All Muscles
Digestive System
Takes in food into the body. Breaks down food. Absorbs the digested material. Eliminates the undigested material.
Major Organs: Mouth, esophagus, stomach, small intestine, large intestine, pancreas, liver
Circulatory System
Carries nutrients and oxygen to the body cells. Carries wastes away from body cells.
Major Organs: Heart, blood vessels ( arteries and veins)
Respiratory System
Takes oxygen into the body. Eliminates carbon dioxide from the body.
Major Organs: Nose, mouth, trachea, lungs, diaphragm
Excretory System
Remove Wases.
Major Organs: Skin, lungs, kidneys, bladder