#Question id: 11754
#Unit 7. System Physiology – Animal
Use the following clinical laboratory test results:
Urine flow rate = 1 ml/min
Urine inulin concentration = 100 mg/ml
Plasma inulin concentration = 2 mg/ml
Urine urea concentration = 50 mg/ml
Plasma urea concentration = 2.5 mg/ml
What is the net urea reabsorption rate?
#Question id: 11755
#Unit 7. System Physiology – Animal
Which of the following solutions when infused intravenously would result in an increase in extracellular fluid volume, a decrease in intracellular fluid volume, and an increase in total body water after osmotic equilibrium?
#Question id: 11756
#Unit 7. System Physiology – Animal
A 65-year-old man has a heart attack and experiences
cardiopulmonary arrest while being transported to the emergency room. The
following laboratory values are obtained from arterial blood:
plasma pH = 7.12,
plasma PCO2 = 60mm Hg, and
plasma HCO3− concentration = 19 mEq/L.
Which of the following best describes his acid-base disorder?
#Question id: 11757
#Unit 7. System Physiology – Animal
Which of the following tends to decrease potassium secretion by the cortical collecting tubule?
#Question id: 11758
#Unit 7. System Physiology – Animal
In normal kidneys, which of the following is true of the osmolarity of renal tubular fluid that flows through the early distal tubule in the region of the macula densa?
#Question id: 11903
#Unit 7. System Physiology – Animal
If a patient has a creatinine clearance of 90 ml/min, a urine flow rate of 1 ml/min, a plasma K+ concentration of 4 mEq/L, and a urine K+ concentration of 60 mEq/L, what is the approximate rate of K+ excretion?