| A | B |
|---|
| excretion | process by which wastes are removed from the body |
| kidney | main excretory organ |
| nephron | microsopic chemical filtering factory in the kidneys |
| capsule | cup-shaped part of the nephron |
| ureter | tube that carries urine from a kidney to the urinary bladder |
| urinary bladder | muscular sac that stores urine |
| urethra | tube through which urine leaves the body |
| liver | organ that produces bile |
| skin | outer covering of teh body |
| epidermis | top layer of skin |
| dermis | bottom layer of skin |
