Term
| What are the main functions of the renal system? |
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Definition
| to filter blood, regulate blood V, ions, and waste |
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Term
| Name the three distinct regions of the kidney. |
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Definition
| cortex (outter), mudulla (inner), renal pelvis |
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Term
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Definition
| smallest functional unit of the kidney |
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Term
What make up a nephron?
Understand what each component of the nephron serves to do? |
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Definition
| the vascular (brings in the blood)and tubular (transport filtration) and the glomerulus is where filtration happens ....................... |
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Term
| Why is the blood pressure high in the glomerulus? |
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Definition
to make sure filtration occurs and resorption doesn't happen
afferent arteriole has a bigger diameter |
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Term
| What do the juxtaglomerular (JG) cell function to do? |
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Definition
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Term
| What forces influence the overall net movement of filtration out of the glomerulus? |
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Definition
| the pressure is higher in the glomerulus |
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Term
What happens when glomerular filtration rate (GFR) is too high?
a. Too low? |
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Definition
There is not enough time for resorption and important things are eliminated that we need
a. Too much of the bad stuff is reabsorbed and makes risk for blood disease |
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Term
| What are the intrinsic and extrinsic controls for GFR? |
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Definition
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Term
| What does myogenic autoregulation respond to? |
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Definition
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Term
| Which division of the nervous system influences GFR? How? |
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Definition
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Term
When the rennin-angiotensin mechanism is initiated, what influence does it have on blood pressure?
a. When is this mechanism is activated? |
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Definition
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Term
| Why is Na reabsorption so important for the reabsorption of other solutes? |
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Definition
| Because other nutrients follow Na (like water) |
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Term
| What is the T (m) for a reabsorbed substance? |
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Definition
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Term
| Why wouldn't a substance be reabsorbed? |
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Definition
| not soluble across the membrane, no channels, no carrier (ie waste, curic acid) |
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Term
| Why is tubular secretion important? |
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Definition
| to control blood pH levels |
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Term
What is is the permeability for water and solutes in:
a. The descending loop of Henle?
b. The ascending loop of Henle? |
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Definition
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Term
| How is dilute urine formed (water reabsorption/ ion movement/ hormone present)? |
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Definition
| do not need to reabsorb water and no need for hormones. NO ADH. |
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Term
| How is concentrated urine formed (water reabsorption/ ion movement/ hormone present)? |
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Definition
| water needs to be reabsorbed. ADH is needed. |
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Term
| What substances are usually never reabsorbed? |
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Definition
| Urea, creatine, and uric acid |
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