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16 Cards in this Set
- Front
- Back
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What is homeostasis?
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the process by which a stable internal environment within an organism is maintained
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Osmoregulation
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maintenance of a water and solute balance
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Excretion
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removal of metabolic waste products
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Thermoregulation
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maintenance of a constant internal body temperature
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What are the primary homeostatic organs in mammals?
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kidneys, liver, large intestine and skin
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Kidneys
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regulate the concentration of salt and water in the blood through the formation and excretion of urine
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Where are the kidneys located?
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behind the stomach and liver
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1 Million of what are found in a kidney?
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nephrons
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Into what regions is the kidney divided?
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cortex, medulla and pelvis
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Through what artery does blood enter the kidney?
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renal artery
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What does the renal artery divide into?
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afferent arterioles that run through the medulla and into the cortex
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Each afferent arteriole branches into what?
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a convoluted network of paillaries called a glomerulus
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After the glomerulus, what do the capillaries converge into?
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efferent arteriole
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What does the efferent arteriole divide into?
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vasa recta
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vasa recta
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fine capillary network
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What does the vasa recta do
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enmeshes the nephron tubule and then converges into the renal vein
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