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Dat bio
excretion
| Question | Answer |
|---|---|
| excretion is the removal of _____ produced by the body | metabolic waste |
| ______ of amino acids in the liver forms urea | deamination |
| annelids excrete minerals and urea using | nephridia |
| arthrodods excrete nitrogenous waste as _______ | uric acid |
| ________ arterioles enters the glomerulus | afferent |
| ________ arteiole drains the glomerulus | efferent |
| Filtration occurs in _____ | glomerulus |
| why is the afferent larger than efferent | -blood pa is much higher and drive filtration |
| _____ secretes angiotensinogen whch is acted upon by renin secreted by _______ | liver; kidney |
| Angiotensin_____ afferent and efferent arterioles. stimulates ____ and water __________ by prox tubule | constricts; Nacl; reabsorption |
| tubular secretion | renal tubule extracts chemicals from blood to tubular fluid |
| tubular reabsorption | substances from filtrate reabsorbed into blood primarily occurs in the Prox tubule |
| tubular reabsorption is passive or active process? | active process |
| wats the function of the nephron loop | form a salinity gradient that causes the collecting duct to conserve water |
| significance of thick segment of ascending loop | reabsorb 25% Na + impermeable to water |
| fluid entering the distal convoluted tubule is | highly diluted |
| how does DCT regulate the tubular fluid concentration | the effects of hormones, like aldosterone, ANP |
| "salt retaining hormone" | aldosterone |
| role of aldosterone | causes the ascending loop to reabsorb Na and Cl when blood pa is low |
| role of ANP | in response to high blood pressure, inhibits NaCl reabsorption by collecting duct |
| role of ADH | in response to low blood pressure, makes Collecting duct more permeable to water |
| parathyroid hormone | in response to low blood calcium,so increase phosphate exct=retion and increase Ca reabsorption |
| ____ release angiotensinogen; _____ release renin; ________ secretes Angiotensin converting enzyme (ACE) to convert angiotensin 1 to ________ | liver, kidney; lungs; angiotensin II |
| Angiotensin II causes kidney to secrete ____ ; blood vessels to ___ that in turn _____ | aldosterone; constrict; increase blood Pa |
| 2/3 of water is reabsorbed by | PCT |
| water is absorbed by pct via _____ with the aid of _______ | osmosis; aquaporin |
| tubular secretion compensates for____ | waste removal during pct reabsorption |
| ________ directly causes stimulation of aldosterone release | low Na or high K in blood |
| _______ indirectly induce aldosterone release | low blood Pa |
| aldosterone affects the ______ and causes _______ | thick ascending loop; Na reabsorption and K secretion; decreased urine vol. |
| _____ stimulates PTH release | low blood calcium |
| PTH acts on ______ TO INCREASE phosphate excretion | prox tubule |
| PTH acts on ______ and ____ to increase Ca reabsorption which ends up | DCT and thick ascending loop; increasing blood calcium levels |
| how des ADH affect the KIdneys | increases the amt of aquaporins in the collecting duct and tubules |
Created by:
smuttz
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