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22 Cards in this Set
- Front
- Back
filtration
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both nutrients and wastes moved from glomerulus to bowman's capsule by high pressure in glomerulus. (blood to tubule)
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reabsorption
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chiefly nutrients moved from tubule back to the blood; often done by active transport.
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active transport.
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chiefly nutrients moved from tubule back to the blood; often done by ________ ___________.
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secretion
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chiefly waste products or foreign materials moved from blood to tubule at any point after Bowman's capsule; often done by active transport.
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bowman's
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chiefly waste products or foreign materials moved from blood to tubule at any point after ________ capsule; often done by active transport.
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active
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chiefly waste products or foreign materials moved from blood to tubule at any point after Bowman's capsule; often done by _______ transport.
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Proximal convoluted tubule
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most substance reabsorbed here including 100% of most nutrients. WHen Na+ is reabsorbed, either CI- or HCO3- is reabsorbed with it to maintain electrical balance. Some secretion also occurs here.
Where does this take place? |
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Loop of henle
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concentration of the medulla, upper portion actively reabsorb CI- and Na+.
Where is this? |
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Distal convuluted tubule
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aldosterone works here controlling Na+, K+, and H+. When aldosterone is present, Na+ is reabsorbed, while either K+ or H+ is secreted.
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Because also depleting H+ and K+ by excreting in urine and moving H+ in cells.
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Why would K+ depletion cause systemic alkalosis?
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Collecting tubule
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regulation of water (concentration or dilution of urine) under control of antidiuretic hormone (ADH) from the posterior pituitary. This is only permeable to water.
Where is this? |
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more ADH is released
more H20 is reabsorbed urine becomes more concentrate |
What should happen when the blood becomes too concentrated?
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less ADH is released
less water is reabsorbed urine becomes more dilute. |
What should happen when the blood becomes too dilute?
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Syndrome of Inappropiate ADH
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What does SIADH stand for?
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secreting tumor of post. pit. and other parts of the body including lungs.
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What does SIADH cause?
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too much ADH is being secreted.
result: fluids become too dilute. |
What is SIADH?
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Respiratory
Renal |
What are the two systems involved in acid-base balance?
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DCT
increases Na+ reabsorption increases K+ secretion |
Where does Aldosterone act in the kidney? What does it do?
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Respiratory system
To correct alkalosis |
decreases respiratory rate, retaining CO2. The carbonic acid produced dissociates into H+ (which helps neutralize excess OH- and excess (uneeded) bicarbonate ion.
Where is this and what does it correct? |
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Kidney
To correct alkalosis |
Where is this and what does it correct?
Helps eliminate excess bicarbonate ion @ PCT by reabsorbing less bicarbonate and more chloride. Helps retain needed H+ by secreting less H+ and more K+. |
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Respiratory system
To correct acidosis |
Where is this and what does it correct?
Increases respiratory rate, removing CO2, and therefore, corbonic acid. |
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Kidney
To correct acidosis |
Where is this and what does it correct?
Reabsorbs more bicarbonate ion (instead of chloride ion) in the proximal tubule. Actively secretes more H+ instead of K+ in the distal tubule takes two days to reach maximum effect. |