| A | B |
|---|
| excretory system | provides a way for various wastes to be removed from body |
| excretion | process where wastes are removed from body (H20, salts, CO2) |
| kidneys | filter blood, main organ of excretory system |
| nephron | complex set of capillaries & tubes; microscopic chemical filtering factory |
| capsule | carries filtered material to a tiny twisting tube |
| ureters | two long thin tubes that carry urine from kidneys to urinary bladder |
| urethra | tube where urine leaves body |
| liver | helps remove waste from body, filters out amino acids from blood |
| epidermis (part 1) | top layer of skin, mostly dead, flattened cells |
| epidermis (part 2) | no nerves or blood vessels |
| epidermis (part 3) | innermost layer, contains active cells that push up new cells |
| dermis (part 1) | bottom/thicker layer of skin |
| dermis (part 2) | nerves, blood vessels, sweat glands, oil glands, nerve receptors, hair |
| sweat glands | rids body of excess salts, urea, water, regulates body temperature |
