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25 Cards in this Set
- Front
- Back
Podocytes |
are cells in the Bowmans Capsule in the Kidneys that wraps around the capillaries of the Glomerulus |
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Macula Densa cells |
sense changes in the sodium chloride level, and will trigger a autoregulatory reponse |
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Juxtaglomerular cells or Granular cells |
Secretes Renin |
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Macula Densa |
Sensitive to the concentration of NaCl in the distal convoluted Tubule |
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1. decreases resistance to blood flow in the afferent arterioles 2. Increase renin release |
Effects of the signals of Macula Densa |
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Aniostensin 1 |
Renin reacts to angiotensinogen to form _________ |
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Angiostensin-converting Enzymes |
Release form the lungs that acts to Angiostensin I to form Agiostensin II |
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Angiostenin II |
Angiostensin-Converting Enzyme that acts to Angiostensin I to form |
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Angiostensin II |
Acts directly on blood vessels, stimulationg Vasoconstriction |
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Angiostensin II |
acts on the adrenal Glands to stimulates release of Aldosterone |
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Aldosterone |
Acts on the kidneys to stimulate reabsoption of Salt and Water |
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Glomerular Filtration |
Kidneys use to filter excess fluid and waste product out of the blood onto the urine collecting tubules of the kidney |
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1. Capillary endothelium of the glomerulus 2. Inner Layer of Bowman's Capsule 3. Basement Membrane |
Physical Barriers |
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Effective Filtration Pressure |
The pressure tending to force fluidnout of the capillary |
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plasma Constituents |
readily crosses the barrier and their consentrations in the initial filtrate are about the same as in plasma |
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Selective Tubular Reabsorption |
the process whereby certain molecules are reabsorbed from teh filtrate as they pass through the nephron |
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Selective Tubular Secretion |
used to remove drugs, toxins, and poisons or other natural compounds in excessive amounts |
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Glomerulus |
Filters small solutes from the blood |
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Proximal Convoluted Tubules |
reabsorbs ions,water and nutrients; removes toxins and adjust the filtrate pH
Reabsorbs some water,most salts and all sugar |
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Descendind Loop of Henle |
decrease water potential |
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Descending Hoop of Henle |
Addition of salt and removal of water |
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Descending Hoop of Henle |
aquaporins allow water to pass from the filtrate into the intertitial fluid |
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Ascending Loop of Henle |
Reabsorbs Na+ and Cl- from the filtrate into the interstitial fluid |
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Ascending Loop of Henle |
Water potential increases as salts are removed |
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Collecting Ducts |
Water potential decreases again by the removal of water ensuring urine has low wate potential |