Term
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Definition
| process by which a stable internal environment is maintained |
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Term
| important homeostatic mechanisms: |
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Definition
1. osmoregulation
2. excretion
3. regulation of blood glucose levels
4. thermoregulation |
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Term
| primary homeostatic organs... |
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Definition
kidneys, liver, large intestine, and skin
KLLS |
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Term
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Definition
| regulate the concentration of salt and water in the blood through the formation and excretion of urine |
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Term
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Definition
| nephrons--about 1 million! |
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Term
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Definition
| cortex, medulla, and pelvis |
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Term
| blood enters the kidney through |
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Definition
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Term
| renal artery divides into |
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Definition
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Term
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Definition
| through the medulla into the cortex |
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Term
| afferent arterioles branch into... |
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Definition
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Term
| convoluted network of capillaries |
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Definition
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Term
| capillaries converge into |
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Definition
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Term
| efferent arterioles divide into |
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Definition
| a fine capillary network = vasa recta |
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Term
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Definition
| goes through the nephron tubule and then converges into the renal vien |
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Term
| a nephron consists of a bulb called |
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Definition
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Term
| Bowman's Capsule embraces... |
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Definition
| a glomerulus and leads into a long tube |
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Term
| coiled tubule is divided into 5 units: |
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Definition
1. proximal convoluted tubule
2. descending limb of the loop of Henle
3. ascending limb of the loop of henle
4. distal convoluted tubule
5. collecting duct |
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Term
| convoluted tubules and Bowman's capsule are in the |
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Definition
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Term
| loop of Henle runs through |
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Definition
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Term
| processes of osmoregulation: |
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Definition
1. filtration
2. secretion
3. reabsorption |
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Term
| blood pressure forces __ percent of blood plasma entering the glomerulus into |
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Definition
| 20; the surrounding bowman's capsule |
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Term
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Definition
| colander--small molecules pass, large ones dont--if you have protein or blood cells in urine-means there is a problem with the glomerulus |
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Term
| nephron secretes substances such as ____ from the ____ into the ____ |
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Definition
| acids, bases, and ions; from the interstitial fluid; into the filtrate |
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Term
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Definition
| by both passive and active transport |
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Term
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Definition
| blood pH, potassium concentration in the blood, and nitrogenous waste concentration in the filtrate |
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Term
| reabsorption results in the formation of |
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Definition
| concentrated urine--hypertonic to the blood |
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Term
| body reabsorbs essential substances such as... |
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Definition
| glucose, salts, and amino acids |
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Term
| nephrons maintain the bloodstream's |
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Definition
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