Block 6 Renal Physiology Part 3
- 1.Px= 5mg/ml Ux= 50mg/ml Pglu= 4mg/ml Uglu= 65 mg/ml Pin=2mg/ml Uin=120 mg/ml V= 2ml/min The filtered load of glucose is
- A.
A. 0ml/min
- B.
B. 32.5 ml/min
- C.
C. 120 ml/min
- D.
D. 480 mg/min
- E.
E. 600 mg/min
- 2.Px= 5mg/ml Ux= 50mg/ml Pglu= 4mg/ml Uglu= 65 mg/ml Pin=2mg/ml Uin=120 mg/ml V= 2ml/min 500 mg/min is the rate at which Solute X is
- A.
A. Filtered
- B.
B. Reabsorbed
- C.
C. Secreted
- D.
D. Excreted
- E.
E. Cleared
- 3.Px= 5mg/ml Ux= 50mg/ml Pglu= 4mg/ml Uglu= 65 mg/ml Pin=2mg/ml Uin=120 mg/ml V= 2ml/min The excretion rate for inulin is
- A.
A. The same as its filtration rate
- B.
B. 100 mg/min
- C.
C. 130 mg/min
- D.
D. 120 ml/min
- E.
E. 240 mg/min
- 4.The normal range for this value is 280-295 mOsm/L
- A.
The concentration of ADH in the plasma
- B.
Urine flow rate
- C.
Plasma osmolality
- D.
Free water clearance
- E.
The clearance of Na+
- 5.A typical value for a well-nourished and well-hydrated person is 1 L/day
- A.
The concentration of ADH in the plasma
- B.
Urine flow rate
- C.
Plasma osmolality
- D.
Free water clearance
- E.
The clearance of Na+
- 6.The value that distinguishes SIADH from dehydration
- A.
The concentration of ADH in the plasma
- B.
Urine flow rate
- C.
Plasma osmolality
- D.
Free water clearance
- E.
The clearance of Na+
- 7.The value that distinguishes central diabetes insipidus from nephrogenic diabetes insipidus
- A.
The concentration of ADH in the plasma
- B.
Urine flow rate
- C.
Plasma osmolality
- D.
Free water clearance
- E.
The clearance of Na+
- 8.The increase in peritubular capillary reabsorption that accompanies volume depletion is NOT due to
- A.
A. glomerulotubular balance
- B.
B. increased filtration fraction
- C.
C. increased peritubular capillary plasma oncotic pressure
- D.
D. an increase in angiotensin II
- E.
E. decreased peritubular capillary pressure
- 9.H+/K+ ATPase is found in the parietal cells of the stomach and in the
- A.
A. proximal tubule epithelium
- B.
B. thick ascending limb epithelium
- C.
C. thin loop of Henle epithelium
- D.
D. alpha-intercalated cells
- E.
E. principal cells
- 10.Potassium loss in the urine is increased by
- A.
An increase in intracellular [K+]
- B.
An increase in the activity of the electrogenic H+ pump in intercalated cells
- C.
A decrease in the electrical potential difference across the collecting duct epithelium
- D.
A decrease in the GFR
- E.
Decreased Na+ reabsorption by principal cells
- 11.ADH
- A.
A. is secreted from neurons in the anterior pituitary
- B.
B. secretion is increased by a decrease in plasma osmolarity
- C.
C. secretion is stimulated by decrease in venous return
- D.
D. binds to receptors on the apical membrane of intercalated cells
- E.
E. mediates water reabsorption in the kidneys via V1 receptor
- 12.With a loss of blood volume there is both a reduction in GFR and an increase in the reabsorption through the peritubular capillary. The rapid reduction in GFR following volume depletion is primarily due to
- A.
A. tubuloglomerular balance
- B.
B. sympathetic afferent arteriolar vasoconstriction
- C.
C. sympathetic efferent arteriolar vasoconstriction
- D.
D. the drop in systemic arterial pressure
- E.
E. an increase in plasma oncotic pressure
- 13.A healthy young man weighs 80 kg. His ECW measures
- A.
A. 4 L.
- B.
B. 16 L.
- C.
C. 24 L.
- D.
D. 32 L.
- E.
E. 48 L.
- 14.When circulating levels of ADH are high, which segment of the nephron has the lowest permeability to H2O?
- A.
A. Proximal tubule
- B.
B. Descending limb of the loop of Henle.
- C.
C. Thick ascending limb of the loop of Henle.
- D.
D. Late distal tubule.
- E.
E. Inner medullary collecting duct
- 15.Which solute is NOT transported by the symporter in the thick ascending limb?
- A.
A. Na+.
- B.
B. K+.
- C.
C. NH4+
- D.
D. Urea.
- E.
E. Cl- .
- 16.Which one of the components of the plasma listed below is NOT freely filtered?
- A.
A. Urea
- B.
B. Hemoglobin
- C.
C. Creatinine
- D.
D. Glucose
- E.
E. Water
- 17.The cells of the inner wall of Bowman’s capsule that share a basal lamina with the endothelial cells of glomerular capillaries are called
- A.
A. Juxtaglomerular cells.
- B.
B. Macula densa cells
- C.
C. Podocytes
- D.
D. Intercalated cells.
- E.
E. Mesangial cells.
- 18.A kidney stone partially obstructs the ureter of a young man. Which of the following will change as compared to normal?
- A.
A. Pgc
- B.
B. Pt
- C.
C. πgc
- D.
D. πt
- E.
E. Kf
- 19.Which of the following would NOT be observed in uncontrolled diabetes mellitus?
- A.
A. Dehydration
- B.
B. Positive glucose clearance
- C.
C. Osmotic diuresis
- D.
D. Hypokalemia
- E.
E. Hyperglycemia
- 20.Aldosterone secretion from the adrenal cortex is stimulated by
- A.
A. Hypokalemia
- B.
B. ANP
- C.
C. Hypervolemia
- D.
D. Angiotensin II.
- E.
E. Hyperchloremia
- 21.After ingestion of 2 L of water in a 5 minute period, which one of the following occurs?
- A.
A. Thirst
- B.
B. Increased Posm
- C.
C. Decreased ADH secretion.
- D.
D. Decreased RPF.
- E.
E. Decreased free water clearance.
- 22.The plasma concentration of protein Z is 5 mg/ml. Its filterability quotient is 0.2. GFR is 100 ml/min. What is the filtered load of protein Z?
- A.
A. 100 ml/min
- B.
B. 500 ml/min.
- C.
C. 1 L/min.
- D.
D. 100 mg/min
- E.
E. 500 mg/min
- 23.Which of the following is NOT a step in counter-current multiplication?
- A.
Energy-dependent reabsorption of solute from the tubular fluid of the thick ascending limb.
- B.
Equilibration of the osmolarity of the medullary interstitium and the tubular fluid in the descending limb.
- C.
Slow flow of tubular fluid.
- D.
Reabsorption of water from the tubular fluid of the descending limb.
- E.
Reabsorption of solute and water from the tubular fluid of the proximal tubule.
Related Topics
Back to top