Q. No.
The region of human kidney where you expect to find maximum osmolarity is:
1. at the top of the renal cortex
2. at the bottom of the renal cortex
3. at the top of the renal medulla
4. at the bottom of the renal medulla
The most toxic nitrogenous metabolic waste product is:
| 1. ammonia | 2. urea |
| 3. uric acid | 4. methane |
Malpighian body or the renal corpuscle is made up of:
1. Glomerular capillaries and PTCN
2. Bowman's capsule and renal tubules
3. Afferent and efferent arterioles
4. Glomerular capillaries and Bowman's capsule
The reabsorption, from the filtrate, of sodium, glucose and amino acids:
1. involves the Bowman's capsule
2. is restricted to the loop of Henle
3. occurs mainly in the proximal convoluted tubules
4. occurs mainly by osmosis
During the concentration of urine, the medullary interstitial osmolality is increased by all the following except:
| 1. | Solute reabsorption in the ascending limb of the loop of Henle |
| 2. | Sodium reabsorption in the distal tubule |
| 3. | Urea reabsorption from the proximal tubule |
| 4. | Urea recycling between the loop of Henle and the collecting duct |
A hormone formed in the blood that causes vasoconstriction is:
| 1. Renin | 2. Aldosterone |
| 3. Angiotensin | 4. Vasopressin |
The collecting ducts become permeable to water and urea due to:
| 1. Aldosterone | 2. Atrial natriuretic peptide |
| 3. Renin | 4. ADH (vasopressin) |
Identify the correct statement regarding human kidney function if ADH is not secreted in the body:
| 1. | Urine will be isoosmotic with plasma. |
| 2. | PCT will not be able to reabsorb water and sodium. |
| 3. | The collecting ducts have very low permeability to water. |
| 4. | The distal tubules secrete water. |
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