Question

TOPIC : OSMOREGULATION BY THE KIDNEYS For the purpose of this assignment, assume that the values in table 1 below are values for a person in water balance Table 1 Plouma Na concentration Plasma omoly Urine osmolality Value 140 mmol/ 200 mm 1400 mm Table 2 Consider the following 4 scenarios and answer questions 3 and 4 Individual A Drank 100ml of H.O and rested quietly Individuals Drank 1 Litre of H O and rested quietly Individual Drank 1 Litre of H.O and after 30 minutes exercised for 30 minutes at a high intensity sweating profusely Individual D individual has syndrome of inappropriate antidiuretic hormone (SIADHI DR Condition where al ADH we led , che dae tolong tumours progra m Question 3: In table 3 below are values you measured in blood and urine samples from the 4 individuals in the practical class. Match the values with the individual (ill in the table, and briefly explain the reason for your answer for each of the three meters. Individual As Identified and the explanation for this choice is given so that you can see how to answer this portion of the assignment Table Na Plasma osmolality Urine osmolality Plasma concentration 112 mmol/L 140 mmol/l 150 mmol/l 130 mmol/l 230 mOsm 290 mOsm 310 mOsm 270 mm 950 mm 400 mm 360 mm 500 mm Individual A: Drinking a small volume of HO Re 100ml) would not disturb the water balance significantly for all three parameters, from the values given in table A Individual Individual Individual

Answer 1

Indivisual B - drink lot of water 1lit cause dilute Na+ in blood volume it become 112mOsmol/lit and this cause lesswater intaketo blood so blood plasma osmol decrease and become 230mOsmol/lit while excess water come to urine so its value increases and become 950mOsmol/lit

Indivisual C- loss water in doing exercise so water loss occur which cause concentrated Na+ in plasma so it's become 150mOsmol/lit, plasma osmolarity also increases as high Na+ ions bring more water inside so osmolarity to 310mOsmol/l and cause less urine formation so osmolarity is also less 360mOsmol/lit

Indivisual D has inappropriate or more ADH formation so more water conservation and hence Na+ is diluted to 130mOsmol while water osmol decreases to270mOsmol/l aand urine formation is concentrated 500mOsmol/l

Hope it's clear .thanks