Terms in this set (15)
removal process of waste from the body; keeps the body's internal environment stable and free of harmful materials
role of excretory system
collects wastes produced by cells and removes the wastes from the body
4 structures of the excretory system
kidney, ureter, urinary bladder, urethra
there are two, remove urea and other wastes from the blood, act like filters, remove wastes but keep materials that the body needs
what is the major organ of the excretory system
What are 2 wastes that the body must get rid of
urea and water
What does glucose in the urine indicate?
diabetes-a condition in which body cells cannot absorb enough glucose from the blood
What does protein in the urine indicate?
a sign that the kidneys are not working properly
What are nephrons
located in the kidneys; tiny filtering factories that remove wastes from blood and produce urine
How do nephrons filter waste?
first-both wastes and needed materials such as glucose are filtered out of the blood; second-much of the needed material is returned to the blood; third-wastes are eliminated from the body
what is the role of excretion in maintaining homeostasis
by keeping the body's internal environment stable and free of harmful levels of chemicals; also maintains homeostasis in the lungs, skin, and liver
How does the skin serve an excretory function
sweat glands; water and urea are excreted in perspiration
How do the lungs serve an excretory function
when you exhale, carbon dioxide and some water are removed from the body
How does the liver serve an excretory function
breaks down wastes so that they can be excreted and also acts as a recycling facility (example-protein is broken down into urea)
Other than the kidneys, what other 3 organs help excretion?
lungs, skin, liver