Human body
Level of organization
organs
organ system
tissue
organism
Cells
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digestive system
Mouth esophagus liver stomach gall bladder pancreas small intestine, large intestine, rectum to break down food into its nutrient to absorb those
nutrients into the blood stream, to excrete waste from your food
circulatory system
Male: tube from bladder, seminal vesicle, prostate gland, sperm duct, uretha, head of penis, foreskin, testes, scrotum sperm.
reproductive system
Female: oviduct, ovary, cervix,eggs,vagina
to produce offspring so that humans don't die
digestive, muscular
Muscles, tendon
Muscular system
tendon: connects muscle to bone
smooth muscle: involuntary lines digestive track
cardiac muscle: involuntary, in the heart
skeletal muscle: voluntary used for movement
skeletal system
bones ligaments cartillage
Structure, protection, and movement
muscular system helps with movement
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