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10 Cards in this Set

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  • Back
Homestasis
maintenance of a constant internal environment
What does urine contain
mostly water, with urea, dissolved salts and other organic compounds
osmoregulation
control of water levels in the blood. The hypothalamus in the brain detects the levels of water in the blood and releases varying levels of ADH which travels to the kidney. If there is a lot of ADH, more water will be reabsorbed into the blood, which changes the levels of water in urine.
ulltrafiltration
where waste products are filtered out of the blood (such as glucose, amino acids, ions and urea) in the kidney at the beginning of the nephron in bowman's capsule.
selective reabsorption
where useful products are put back into the blood in the nephron
name parts of the urinary system
kidneys, renal vein and renal artery, ureter, bladder, sphincter muscles and urethra
where does selective re absorption of glucose occur
the first coiled tubule of the nephron
where is water re absorbed into the blood
from the collecting duct
how does the skin keep us cool
vasodilation, sweating
how does the skin keep us warm
vasoconstriction, shivering, hair erection, changes to metabolism