The part of the nephron that is least permeable to water is the:
1. ascending limb of the loop of Henle
2. descending limb of the loop of Henle
3. collecting duct
4. proximal convoluted tubule
Urea in humans is synthesized in:
1. Kidneys | 2. Renal vein |
3. Liver | 4. Urinary bladder |
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
Filtration slits in the glomerular membrane are formed by:
1. The capillary endothelial cells
2. The basement membrane
3. The podocyte cells
4. Mesangial cells
All the following are secreted by the tubules of nephrons except:
1. Sodium ions | 2. Potassium ions |
3. Uric acid | 4. Hydrogen ions |
A hormone formed in the blood that causes vasoconstriction is:
1. Renin | 2. Aldosterone |
3. Angiotensin | 4. Vasopressin |
In the male, urethra serves to:
1. transport urine from kidney to bladder
2. transport sperms to ejaculatory ducts
3. store urine and sperms
4. discharge semen and urine
The functional unit of the human kidney is the:
1. | glomerulus | 2. | Malpighian body |
3. | nephron | 4. | medullary pyramids |
The vascular endothelium of glomerular capillaries, basement membrane, and podocytes in the inner lining of Bowman’s capsule form:
1. filtration membrane | 2. juxtaglomerular apparatus |
3. Malpighian corpuscle | 4. nephron |