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15 Cards in this Set
- Front
- Back
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Nerve supply
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Renal plexus of sympathetic division of A.N.S.
Autonomic regulation |
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Autonomic regulation
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vasomotor regulation of arterioles alter diameter of arterioles thus blood flow through kidneys
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Juxtaglomerular appartus
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helps regulate blood pressure within the kidneys.
formed by macula densa and juxtaglomerular cells |
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Juxtaglomerular cells
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Along side the macula densa, the wall of modified smooth muscle cells of afferernt and sometimes efferent arterioles is called ______ _____.
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Macula densa
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modified cells of distal portion of ascending limb of henle
columnar tubular cells in this region are crowded together |
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Juxtaglomerular appartus
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Appartus that helps regulate blood pressure
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Regulation of internal environment (homeostasis)
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What is the function of a nephron?
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Water and solute concentrations
Blood pH Removal of toxins |
What are the regulations of internal environment (homeostasis)?
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Urine formation
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Glomerular filtration
Tubular reabsorption Tubular secretion |
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Glomerular filtration
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first step of the urine production
water and most soluters in blood plasma move across the wall of glomerular calpillaries into the glomerulur capsule and then into the renal tubule |
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Tubular reabsorption
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fluid flow into renal tubule and through the collecting duct, tubue cells reabsorb 99% of filtered water and useful solutes. Water and solutes return to the blood as it flow through the peritubular capillaries and basa recta.
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Reabsorption
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refers to the return of filtered water and solutes to the bloodstream
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absorption
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contrast to reabsorption
entry of new substances into the body, as occurs in the GI tract. |
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Tubular secretion
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fluid flow along the tubule and through the collecting duct, the tubule and duct cells secrete other materials, such as wastes, drugs, and excess, ions, into the fluid.
removes substances from the blood. |
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Glomerular filtrate
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The fluid produced when blood is filtered by the filtration membrane in the glomeruloi of the kidney.
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