| A | B |
| skin and lungs | organs that help in excretion besides the urinary system |
| all of your blood | amount of blood that passes through your kidneys each day |
| urethra | carries urine from bladder to outside of the body |
| nephrons | made of cuplike structures and ducts; filtering units of kidney |
| bladder | organ that holds urine until it leaves the body |
| ureters | tubes that lead from each kidney to the bladder |
| urinary system | made up of organs that rid your body of wastes and control blood volume |
| urine | waste liquid containing water, salts, and wastes |
| kidneys | organs that filter blood to remove wastes collected from all cells |
| 1 million nephrons | each kidney is made up of these |
| hypothalamus | an area in the brain which mnonitors the amount of water in the blood |