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vocab. on body systems

epidermis outer, thinnest layer of skin
dermis below epidermis, contains blood vessels, nerves, ,muscles, oil, sweat glands, and other structures
melanin pigment, protects skin, gives color to skin
digestion process that breaks down food into smaller molecules
mechanical digestion takes place when food is chewed, mixed, and churned
chemical digestion occurs when chemical reactions breaks down large molecules
enzyme type of protein that that speeds up the rate of chemical reaction in the body
peristalsis waves of muscle contractions in digestive system
chyme after being in stomach for 2 to 4 hours a thin-watery liquid is made
villi finger-like projections in small intestines that help absorb food
urinary system body system that rids blood of waste produced by cells
urine wastewater
kidney filters blood
nephron tiny filtering units
ureter tube from kidney to bladder
bladder holds urine
urethra carries urine from bladder to outside of body
Created by: S1005908