If the rate of urine formation is 2 ml/min, the urine inulin concentration is 25 mg/ml, and the plasma inulin concentration 0.5 mg/ml, then the GFR is 6.25 mL/min None of the choices are correct. (c) 0.04 mL/min D) 100 mL/min E) more data is needed to calculate the GFR

If the rate of urine formation is 2 ml/min, the urine inulin concentration is 25 mg/ml, and the plasma inulin concentration 0.5 mg/ml, then the GFR is 6.25 mL/min None of the choices are correct. (c) 0.04 mL/min D) 100 mL/min E) more data is needed to calculate the GFR

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Given: Inulin is freely filtered in the glomerulus and not secreted nor reabsorbed in any appreciable amount at the nephron. If the concentration of inulin in the urine is 20 mg/mL, the concentration in blood plasma is 0.2 mg/mL plasma, and the rate of urine flow is 1 mL/min. a. What is GFR for this person? (Answer part a)
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Regarding the glomerulus: A) Intracapsular pressure and colloid osmotic pressure act to hold serum in the glomerulus B) Only glomerular capillary pressure and net hydrostatic pressure push serum out of the glomerulus and intracapsular pressure and colloid osmotic pressure act to hold serum in the glomerulus C) Glomerular capillary pressure and net hydrostatic pressure push serum out of the glomerulus D) All of these answers are correct E) The net filtration pressure is normally 10mmHg
What is the GFR of each patient? Patient 1: V = rate of urine production (ml/min) = 1.2 U_inulin = amount of inulin excreted in urine each minute (mg/mL) = 15.8 P_inulin = plasma inulin (mg/mL) = 0.151 Patient 2: V = rate of urine production (ml/min) = 0.75 U_inulin = amount of inulin excreted in urine each minute (mg/mL) = 25.2 P_inulin = plasma inulin (mg/mL) = 0.155 Patient 3: V = rate of urine production (ml/min) = 15 U_inulin = amount of inulin excreted in urine each minute (mg/mL) = 1.23 P_inulin = plasma inulin (mg/mL) = 0.154
Calculate the patient’s output during your 12-hour shift in oz. 600 cc of urine at 0700 2 oz of emesis at 0830 432 mL of urine at 1200 60 mL of emesis at 1600 3 oz of stool at 1800
If the Tm for a particular amino acid is 220 mg/100 ml and the concentration of that amino acid in the blood is 130 mg/100 ml, the amino acid will ________. A) not appear in the urine because it is too large to be filtered B) be actively secreted into the filtrate C) be completely reabsorbed by the tubule cells
Given: For urea, the rate of excretion equals to the GFR times the urea concentration in plasma. (A) If the urea concentration in plasma is 4.5 mmol/l, what GFR (in l/day) would correspond to an excretion rate of 450 mmol/day. (B) If the urea clearance is 70 ml/min and the GFR is 125 ml/min, what fraction of urea is being reabsorbed. (answer A and B)
Given: The concentration of glucose in the blood is 1 mg/mL. This person then decides to go for a brisk run, which doubles GFR. a. What effect will this have on the amount of inulin and glucose present in their urine? Why? (answer a )
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36. A 3-month-old boy is brought to the emergency department because of a 2-day history of lethargy. Physical examination shows no other abnormalities. The results of laboratory studies are shown: Serum Na+ 165 mEq/L (N=139-146) CI- 130 mEq/L (N=95-105) 334 mOsmol/kg H₂O (N=282-295) Osmolality Urine 1.001 Specific gravity Osmolality 117 mOsmol/kg H₂O (N>200) He is admitted to the hospital. His urine output is increased. His serum ADH (vasopressin) concentration is 24 pg/mL (N=1-5); aldosterone and renin concentrations are within the reference ranges. The urine osmolality remains unchanged after administration of 1-deamino-8-arginine vasopressin. An MRI of the brain and pituitary gland shows no abnormalities. Ultrasonography shows normal kidneys. The most likely underlying cause of the findings in this patient is a defect in which of the following? A) Angiotensin-converting enzyme B) Aquaporin C) 11a-Hydroxylase D) Renin E) Vasopressin receptors