Q. No.The blood from the glomerulus is carried away by:
1. Afferent arteriole
2. Efferent arteriole
3. Peritubular capillary network
4. Renal vein
Vasa recta in cortical nephrons :
1. Arises from afferent arteriole rather that efferent arteriole
2. Does not get involved in counter current exchange with loop of henle
3. Carries deoxygenated blood rich in urea
4. Is absent or highly reduced
The proximal convoluted tubule is lined by the:
1. Simple cuboidal epithelium
2. Simple columnar epithelium
3. Simple cubodial brush bordered epithelium
4. Simple columnar brush bordered epithelium
During concentration of urine by the human kidneys, NaCl is returned to the medullary interstitium by the:
(a) Descending limb of the loop of Henle
(b) Ascending limb of the loop of Henle
(c) Descending limb of the vasa recta
(d) Ascending limb of the vasa recta
An increase in the blood flow to the atria of the heart can cause the release of:
1. Erythropoeitin
2. Atrial natriuretic factor
3. Renin
4. Aldosterone
On average, what amount of urea is excreted out per day by a healthy human being?
1. 5-10 gm
2. 15-20 gm
3. 25-30 gm
4. 50-60 gm
Which of the following does not help in excretion in Periplaneta americana
1. Fat body
2. Urecose glands
3. Nephrocytes
4. None of these
Juxta glomerular apparatus is a special sensitive region formed by cellular modifications in the:
(1) DCT and Efferent arteriole at the point of their contact
(2) DCT and the Afferent arteriole at the point of their contact
(3) PCT and Afferent arteriole at the point of their contact
(4) PCT and Efferent ateriole at the point of their contact
Which of the following statements about the kidneys is incorrect?
1. They consume over 20% of the oxygens used by the body at rest.
2. Approximately 1200ml of fluid is filtrated by the kidneys each day.
3. 120-125 ml of plasma is forced into the renal tubules each minutes.
4. They compose less than 1% of the body weight.
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