Glomerular Filtration Mechanism

Q.

Glomerular filtrate contains

1. Blood plasma without blood cells and proteins

2. Blood with proteins but without cells

3. Plasma without sugars

4. Blood without urea

Q. GFR of a health person is

1. 125 ml/hr
2. 125 ml/min
3. 125 L/hr
4. 125 L/min

Q.

Glomerular filtration rate is ml/min.

Q. Ultrafilration occurs due to

1. high blood pressure
2. low blood pressure
3. active transport
4. none of the above

Q.

The afferent arteriole after leaving the glomerulus forms a dense network of capillaries called __________. ( primary capillary network / secondary capillary network )

Q. In a healthy individual, an average of __________ of blood is filtered by the kidneys per minute.

1. 1000 mL
2. 1100 - 1200 mL
3. 125 mL
4. 1500 mL

Q. Choose the incorrect statement from the following statements
I) GFR in a healthy individual is approximately 125 ml/hr.
II) During urine formation, the tubular cells secrete substances like $H^{+}$, $K^{+}$ and ammonia into the filtrate.
III) On an average, 1100-1200 ml of blood is filtered by the kidneys per minute.
IV) Substances like glucose, amino acids, $N{a}^{+}$ in the filtrate are reabsorbed by passive transport.

1. I and III
2. I only
3. II and III
4. I and IV

Q. The sequence of layers through which the filtration of blood takes place in nephron is.

1. endothelium of glomerular blood vessels, epithelium of Bowman’s capsule, basement membrane.
2. epithelium of Bowman’s capsule, endothelium of glomerular blood vessels, basement membrane.
3. endothelium of glomerular blood vessels, basement membrane, epithelium of Bowman’s capsule.
4. epithelium of Bowman’s capsule, basement membrane, endothelium of glomerular blood vessels.

Q. The amount of urine formed per day is

1. 2.5 litres
2. 1.5 litres
3. 4 litres
4. 3 litres

Q. The process that pushes out water and other dissolved materials from blood in the glomerulus is

1. Dialysis
2. Secretion
3. Filtration
4. Ultrafiltration

Q.

Correct sequence of urine formation is:

1. Filtration, reabsorption, secretion

2. Secretion, reabsorption, filtration

3. Reabsorption, secretion, filtration

4. Reabsorption, filtration secretion

Q. What would happen to the GF Rate, if the hydrostatic pressure exerted by the fluid in the capsular space increased?

1. The glomerular filtration rate would decrease
2. The glomerular filtration rate would increase
3. The glomerular filtration rate would not change
4. None of these

Q.

Which of the following will lead to an increase in glomerular filtration in the kidney?

1. An increase in the protein concentration in the plasma

2. An increase in the fluid pressure in Bowman’s space

3. An increase in the glomerular capillary blood pressure

4. A decrease in the glomerular capillary blood pressure

Q.

The glomerular filtration rate in a normal adult is nearly_______

1. 200 ml/min

2. 250 ml/min

3. 125 ml/min

4. 170 ml/min

Q.

Explain the autoregulatory mechanism of GFR.