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Excretory System


What are the four metabolic wastes? Water, carbon dioxide, urea, and salt.
Liver. Produces urea, excretes and produces bile, detoxification, deanimation, removes worn out red blood cells, removes excess amino acids, storage of glycogen (animal starch).
Removal of harmful toxins. Detoxification.
Removal of the amino group (NH2) from amino acids which gets converted into urea. Deanimation.
Function of the lungs. Excrete carbon dioxide and water vapor.
What process involves having carbon dioxide and water vapor as waste products? Cellular respiration.
Excretes wastes through the pores. Sweat glands.
What is sweat made of? Water, mineral salts, and urea.
Why is the skin's function of excretion important? It helps regulate body temperature and maintain homeostasis.
Excretion. Removal of metabolic wastes.
True or False: The removal of feces in the anus is a part of excretion. False, egestion.
Kidneys. Removes waste products, such as urea, from the blood and filters it, helps maintain blood pH, homeostasis, and regulates the water content of blood.
Structural units of the kidney. Nephrons.
Cluster of capillaries encased in the upper end of the nephron. Glomerules.
Permeable cup shaped structure that surrounds the glomerules. Bowman's capsule.
Filtration. Passing a liquid or gas through a filter to remove wastes.
Filtrate. Materials that are filtered from the blood. (Ex: water, urea, glucose, salts, amino acids, vitamins)
Why aren't plasma proteins, cells, and platelets removed from the bloodstream? They are too large to pass through the capillary walls, so they remain in the blood.
Reabsorption. The process by which a liquid is taken back into a vessel.
How are amino acids, fats, and glucose removed from the filtrate and reabsorbed by the capillaries? Active transport.
What three substances are removed from the filtrate and reabsorbed by the capillaries by active transport? Amino acids, fats, and glucose.
What is urine composed of? Urea, salts, and water.
Where is urine concentrated in the kidney? The Loop of Henle.
A section of the nephron tubule in which water is conserved and the volume of urine is minimized. Loop of Henle.
Carries urine from the kidneys to the urinary bladder. Ureters.
Muscular organ in which urine is stored temporarily. Urinary bladder.
Carries urine from the bladder to the outside of the bladder. Urethra.
Sequence of the urinary system. Kidneys, ureter, urinary bladder, urethra.
Created by: emarciante9