The Excretory System Answers

Use the drop-down menus to match the following descriptions to the structures and wastes of the excretory system. spongy and elastic saclike organs that allow the inhalation of oxygen and exhalation of carbon dioxide.

the thin layer of tissue forming the natural outer covering of the body of a person or animal.

the organ of the body that is the site of reabsorption of water and the processing of undigested material into feces.

The large intestine produces

Urine is produced in the nephrons of the kidneys.

Urine that is produced in the kidneys flows down the urethra to the bladder for storage and then is excreted through the ureters.

The skin excretes , which is made up of water, salts, and chemicals like urea.

The liver changes toxic substances into less toxic substances that then travel to the kidneys.

Select all of the body processes that the excretory system is involved in to help the body maintain homeostasis.

Without excreting waste, toxins would build up in the body.

The excrete carbon dioxide and water.

The kidneys filter blood and produce urine.

Sweat is the main way that the body maintains blood pH.

The large intestine produces

Urine is made from the nutrients that are reabsorbed back into the blood from the tubules.

The excretory system prevents dehydration and keeps cells hydrated.

The kidney is the functional unit of the nephron.

Without the excretory system, salts and chemical stay in perfect balance.

The excretory system regulates blood pH.