The branch of renal artery that directly supplies the glomerulus is the:
1. | efferent arteriole | 2. | interlobular artery |
3. | arcuate artery | 4. | afferent arteriole |
Glomerular ultrafiltrate normally does not contain:
1. formed elements of the blood | 2. glucose |
3. amino acids | 4. electrolytes |
The urine concentrating ability of mammals and birds is correlated with the length of their:
1. | ureters | 2. | proximal convoluted tubules |
3. | distal convoluted tubules | 4. | loops of Henle |
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 |