Sets (11)
Classes (0)
Water+Reabsorption definitions
| # | Definition | Sets |
|---|---|---|
| 1 | true | 8 sets |
| 2 | water follows sodium -osmotic gradients est. from na movement -aka obligatory water reabsorption | 4 sets |
| 3 | this is the main function of the large intestine or colon | 3 sets |
| 4 | step4 of urine formantion. h2o enters nephron, body absorbs what it needs, and remainder filtrate becomes urine and is sent to urinary bladder to expelled. | 3 sets |
| 5 | the collecting ducts contain aquaporins. what is their function? | 2 sets |
| 6 | _________ __________ in collecting ducts is directly proportional to adh release | 2 sets |
| 7 | what is the process that removes water from the filtrate and returns it to the blood for reuse called? | 2 sets |
| 8 | aquaporins | 2 sets |
| 9 | the primary function of the large intestine is | 2 sets |
| 10 | effect of adh on the kidney | 2 sets |
| 11 | 99% | 2 sets |
| 12 | by osmosis in pct and descending limb of nephron loop; water reabsorption occurs when osmotic concentration of pertubular fluid exceed that of tubular fluid | 1 set |
| 13 | when there is increases in adh with increased osmolality and decreased blood volume the adh goes to the kidneys and causes _______ | 1 set |
| 14 | 1. cortical portion of nephron 2. medullary portion of nephron | 1 set |
| 15 | what is the rectum important for in insects | 1 set |
| 16 | mechanism: osmosis amount: vary based on body's state location: - in pct water follows na+ by osmosis ( obligatory water reabsorption) - 65% - in the nephron loop 10% - in dct, collecting tubules, and ducts - water reabsorption is regulated by aldosterone and antidiuretic hormone. | 1 set |
| 17 | - occus by osmiosis - oblugatory water reabsorption o when wtare is obliged to follow solutes (pct and dlh) - facultative water reabsorption o occurs in collecting duct under the control of adh • means it just focuses on water • water is not allowed to go wherever until adh is there o if you reabsorb your solutes water is obliged to follow due to osmosis | 1 set |
| 18 | dct | 1 set |
| 19 | most of the water in the tubular fluid is reabsorbed in the pct, follow na by osmosis. moves from descending limb to vasa recta | 1 set |
| 20 | passive; primarily in the proximal convoluted tubule. | 1 set |
| 21 | • each day, between 150-180 l of filtrate• 1-2 l of urine • each day we lose about as much water as we gain | 1 set |
| 22 | removes water from the urine filtrate and returns it to blood | 1 set |
| 23 | removes water from the filtrate and returns it to the blood for reuse by body systems | 1 set |
| 24 | via osmosis as sodium and other ions are reabsorbed by the nephron | 1 set |
| 25 | from proximal tubule and loop of henle to capillary (four stages of urine formation) | 1 set |
| 26 | na+ | 1 set |
| 27 | - 65% is reabsorbed in the pct - 10% is reabsorbed in the descending loh - 5-24% is reabsorbed in the cd 1. water and na are reabsorbed from the pct in equal amounts 2. water and na are reabsorbed from the loop of henle but the part of the loop where they are reabsorbed is different. overall, more na than water is reabsorbed from the loop of henle 3. na is reabsorbed from the dct but water is not 4. water and na are reabsorbed in the cd but the amounts are variable water reabsorption is usually increased by adh in the collecting duct. | 1 set |
| 28 | proximal tubules - reabsorption of solutes (amino acids, glucose, na+) - osmolarity decrease in the tubular lumen (because less solute and more water). - water moves by osmosis out of tubular lumen toward the higher osmolarity in the isf. - both the solutes and water reabsorbed in the same percentage. | 1 set |
| 29 | • proximal tubule - removal of na+, glucose, amino acids and other substances from the lumen into the isf increases the concentration of water within the lumen - water is reabsorbed by osmosis into the isf. - water moves because of the difference in osmolarity between the tubular fluid (low osmolarity) and the isf (high osmolarity). - water moves toward higher osmolarity - removal of water from tubular lumen increase the concentration of diffusible substances - they move into the isf and capillaries by simple diffusion | 1 set |
| 30 | what is the function of aquaporins | 1 set |
| 31 | most in proximal convoluted tubule; water moves passively by osmosis and is associated with active reabsorption of na+ (if na+ reabsorption increases, so does water reabsorption, and vice versa) | 1 set |
| 32 | - ~65% obligatory water reabsorption in pct - ~10% of water reabsorption in nephron loop - regulated (facultative) water reabsorption in dct, ct, and cd | 1 set |
| 33 | materials reabsorbed via passive process such as diffusion,osmosis, and facilitated diffusion | 1 set |
| 34 | movement of permeating solutes follows ______________. | 1 set |
| 35 | kidneys compensate for changes in osmolarity of ecf by regulating _________. passive process based on osmotic gradient | 1 set |
| 36 | • occurs when osmotic concentration of peritubular fluid exceeds that of tubular fluid • 1%-2% of water in original filtrate is recovered • during sodium ion reabsorption • in distal convoluted tubule and collecting system | 1 set |
| 37 | occurs passively (no energy required) by osmosis | 1 set |
| 38 | about 2/3s of all water is reabsorbed by the pct due to following solutes osmolarity of the tubular fluid is unchanged in the pct because water and solutes move at the same rate water reabsorption outside of the pct is regulated by hormones. | 1 set |
| 39 | location: loop of henla (filtrate) & distal convoluted tubule (filtrate) & collecting duct (urine)/ peritubular capillary network (blood) -active (na+) -electrical attraction (cl-) -osmosis (water) | 1 set |
| 40 | proximal tubules - reabsorption of solutes (amino acids, glucose, na+) - osmolarity decrease in the tubular lumen (because less solute and more water). - water moves by osmosis out of tubular lumen toward the higher osmolarity in the isf. - both the solutes and water reabsorbed in the same percentage. | 1 set |
| 41 | • proximal tubule - removal of na+, glucose, amino acids and other substances from the lumen into the isf increases the concentration of water within the lumen - water is reabsorbed by osmosis into the isf. - water moves because of the difference in osmolarity between the tubular fluid (low osmolarity) and the isf (high osmolarity). - water moves toward higher osmolarity - removal of water from tubular lumen increase the concentration of diffusible substances - they move into the isf and capillaries by simple diffusion | 1 set |
| 42 | adh is stored in the posterior pituitary and it stimulates _ _ | 1 set |
| 43 | _________ is by osmosis and is dependent upon sodium reabsorption | 1 set |
| 44 | (fourth step) water enters the nephron, and then the blood reabsorbs exactly the amount it needs and leaves the rest (the remaining water is the principal component of urine) | 1 set |
| 45 | role of adh | 1 set |
| 46 | what does antidiuretic hormone cause an increase in? | 1 set |
| 47 | in the kidney, process which removes water from the filtrate in the nephron and returns it to the blood for reuse by body systems | 1 set |
| 48 | juxtamedullary longer than cortical nephrons - allow for greater water reabsorption | 1 set |
| 49 | occurs throughout the proximal tubule by the passive process of osmosis | 1 set |
| 50 | reabsorbed by osmosis is associated with the reabsorption of sodium and other electrolytes filtrate becomes more concentrated as water leaves filtrate is reabsorbed only if adh is present | 1 set |
| 51 | major function of large intestine | 1 set |
| 52 | obligatory water reabsorp. | 1 set |
| 53 | tubule cells impermeable to ions, but permeable to water, water is reabsorbed via osmosis, descending loh | 1 set |
| 54 | •kidneys reduce 180 l of glomerular filtrate to 1 or 2 liters of urine each day •two-thirds of water in filtrate is reabsorbed by the pct •reabsorption of all the salt and organic solutes makes the tubule cells and tissue fluid hypertonic | 1 set |
| 55 | various solutes are reabsorbed actively water follows diffusing passively urea concentration increases in filtrate urea diffuses out of the tubule lumen | 1 set |
| 56 | if body has no need for water, like when someone drinks a lot of water or does not sweat a lot, water will stay trapped in tube and go to bladder with other wastes. when someone is dehydrated the kidneys try to keep as much water as possible. | 1 set |
| 57 | obligatory water reabsorption and facultative water reabsorption | 1 set |
| 58 | osmosis | 1 set |
| 59 | obligatory reabsorption and facultative reabsorption | 1 set |
| 60 | passive transport; located in the proximal convoluted tubule, descending loop of henle, and collecting duct | 1 set |
| 61 | answer: true | 1 set |
| 62 | urinary | 1 set |
| 63 | removing solutes sets up osmotic difference so water follows solutes- passes thru special protein pores called aquaporins on both sides of epithelial cells | 1 set |
| 64 | passive reabsorption follows sodium by osmatic difference | 1 set |
| 65 | obligatory reabsorption facultative reabsorption increased water intake dehydration diabetes insipidus diuretics | 1 set |
| 66 | obligatory reabsorption facultative reabsorption, regulated by adh | 1 set |
| 67 | 70% in pt 15% thin descending limb none ascending limb 8-17% dt and collecting duct driving force transtubular osmotic gradient | 1 set |
| 68 | varies depending on the presence of 2 hormones -adh and aldosterone. both of these increase water reabsorption, which decreases urine production | 1 set |
| 69 | water diffuses out of the descending limb of the loop of nephron as salt is actively transported out of the ascending limb; hypertonic environment where water is reabsorbed | 1 set |
| 70 | vasopressin - | 1 set |
| 71 | is based on differences in solute concentration | 1 set |
| 72 | last step in urine formation, removes water from urine filtrate and returns it bck into the blood | 1 set |
| 73 | the loop of henle and the collecting duct have one major function: _____ _______. | 1 set |
| 74 | approximately 9.5 liters of water enter the small intestines daily normally about 7 are derived from secretions into g.i. tract. approximately 9 liters are recovered by small intestines (about 95% of water) large intestines absorb about 350 ml of water, only about 3 or 4% of total water in the intestines. the g.i. tract as a whole retains 99% of the water. | 1 set |
| 75 | removes water from the filtrate and returns it into the blood. | 1 set |
| 76 | mostly occurs near root tips through root hairs | 1 set |
| 77 | the sodium gradient is used for | 1 set |
| 78 | reabsorbed w/ na (passive) | 1 set |
| 79 | a passive process in the pt, thin descending limb of henle, late dt, and cd | 1 set |
| 80 | vasopression | 1 set |
| 81 | single columnar epithelium of mucosa layer of small intestine | 1 set |
| 82 | kidneys reduce 180 l of glomerular filtrate to 1 or 2 liters of urine each day • two-thirds of water in filtrate is reabsorbed by the pct -reabsorption of all the salt and organic solutes makes the tubule cells and tissue fluid hypertonic - water follows solutes by osmosis through both paracellular and transcellular routes through aquaporins | 1 set |
| 83 | na+ and cl- entering cells causes water to enter into tubule cell. | 1 set |
| 84 | - passively reabsorbed throughout length of tubule - 80% by proximal tubule and loop of henle (obligatory, following na) - 20% distal tubule (variable depending on vasopressin) | 1 set |
| 85 | -na provides the energy necessary to reabsorb any other substances -all other solutes are reabsorbed by secondary active transport - water is reabsorbed by osmosis | 1 set |
| 86 | occurs by obligatory water reabsorption: 2/3 with aquaporins in pct | 1 set |
| 87 | (in nephron) passive osmosis of water drawn into cells or tissues as a result of a higher solute concentration within the tissues | 1 set |
| 88 | (in nephron) passive osmosis of water drawn into cells or tissues as a result of a higher solute concentration within the tissues | 1 set |
| 89 | last step- removes water from urine filtrate and returns it to blood | 1 set |
| 90 | prox tube is 65% loop of henle dec has some, asc has none (10/25%) distal tube has very little-nacl resorbed tho by cotransport collecting duct is regulated permeability | 1 set |
| 91 | 1. na reabsorption = aldosterone (hormone) tells kidney to reabsorb water and retain na+ along with nutrients. 2. adh (antidiuretic hormone) - enables kidney to separate salt and water from post pituitary gland. - promotes water reabsorption over na reabsorption. | 1 set |
| 92 | -pct= 65% -loop= 15% -dct= 10-15% -collecting duct = 5-10% with adh | 1 set |
| 93 | water reabsorbed at the descending loop of henle and the collecting duct | 1 set |
| 94 | last step, removes water from the urine and returns back to the blood | 1 set |
| 95 | >proximal tubules --approx.70%-80% of the filtered water (180l/day) is reabsorbed from this portion of each nephron not regulated >distal tubules and >collecting ducts --most remaining water is reabsorbed --regulated primarily by adh --1.5l/day of urine excreted on average | 1 set |
| 96 | reabsorbed as water osmotically follows na+. | 1 set |
| 97 | adh is necessary for | 1 set |
| 98 | -passively reabsorbed thru tubule length (mainly prox tube & loop of henle) | 1 set |