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24 Cards in this Set
- Front
- Back
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What percentage of proteins, salts, and water are taken back by the proximal convoluted tubule?
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70%
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What gradient does the Helen's loop establishes?
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salt gradient in medulla region
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What part of the Helen's loop is only permeable to salt?
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thin ascending limb
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What part of the Helen's loop is not permeable to water?
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thick ascending limb
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What part of Helen's loop is not permeable to salts?
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thick descending limb
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What is a nephron?
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a basic functionl unit
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What happens in the thinner part of loop of Henle?
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less concentration
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What does long loop of Henle regulates?
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regulates the amount of water
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What type of cells in proximal convoulted tubule?
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cuboidal epithelial cell with long dense microvilli
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What type of cells in distal convoulted tubule?
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cuboidal epithelial cell with short microvilli
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What is the beging filtration unit of nephron?
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Renal corpuscle
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What are the 2 parts of renal corpuscle?
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1. glomerulus = blood vessel part and regulatory cells
2. Bowman's capsule= epithelial cell formed collecting unite |
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What type of cells in Bowman's capusule (parietal layer)?
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thin, simple squamus epithelial cells
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What is the original space in the tubule called?
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urinary space
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What's another name for the visceral layer in Bowman's capsule?
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podocyte layer
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What type of cell wraps around blood vessels (capillaries)?
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podocytes a special type of epithelial cell
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What's the junction b/w podocytes and capillaries?
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basal laminae (great filter b/c anything like water, salts, glucose, vitamines and proteins smaller than 70 Kda)
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What's basal lamina produced from?
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epithelium cells, Laminin.
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What are the two main barriers?
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1. + charge of proteoglycans
2. basal laminae |
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What's the function of Mesangial cells?
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constrict space of capillary;
clear out deposites that aggreated b/w podocytes and epithelium cells; contractile and regulated by Angiotensin & other factors |
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What part of the tubule has a lot of microvilli (to increase surface area) for absorption?
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Proximal Convoluted Tubule
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What's packed within the efferent tubules?
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red blood cells
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In what part of the kidney, water get's mostly reabsorbed?
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proximal convoluted tubule; 70% water and salts
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What's required to pump salt out?
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energy ATP; therefore there's a lot mitochondria in proximal convoluted tubule
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