| A | B |
|---|
| excretion | Removal of metabolic wastes |
| Malpighian tubules | Insect's organ of excretion |
| Nephridia | Earthworm's organ of exctetion |
| Flame cells | Planaria's organ of excretion |
| Contractile vacuole | Freshwater protista's organ of excretion |
| filtration | Occcurs by passive transport where molecules diffuse from the glomerulus into the Bowman's capsule |
| Skin | The human organ that excretes water and nitrogenous wastes in sweat |
| Lungs | The human organ that excretes CO2 and water vapor |
| Kidneys | The human organ that excretes nitrogenous wastes and excess water |
| Liver | The human organ that sometimes consideredan organ of excretion and because it is the site of deamination and where urea is produced |
| Ammonia | A nitrogenous waste that is very soluble in water and highly toxic |
| Urea | A nitrogenous waste that is not as toxic as Ammonia and is excreted by earthworms and humans |
| Uric acid | A nitrogenous waste that is a pastelike substance that is not soluble in water and therefore not very toxic |
| Nephron | The basic functional unit of the human kidney |
| Secretion | Is the selective reuptake of molecules that did not get filtered into Boman's capsule and occurs by active transport |
| Reabsorption | Occurs mainly in loop of Henle and collecting tubule and involves both passive and active transport |
| Antidiuretic hormone | A hormone that is released by the posterior pituitary gland and responds to changes in the concentration of blood |
