Urine from the major calyces in the kidney is collected by:
1. | minor calyces | 2. | renal pelvis |
3. | ureters | 4. | renal papillae |
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 |
A series of straight capillaries in the medulla that lie parallel to the loop of Henle are called:
1. | arcuate arteries | 2. | efferent arterioles |
3. | afferent arterioles | 4. | vasa recta |
About what percent of the glomerular ultrafiltrate is reabsorbed by the tubules during urine formation?
1. 99% | 2. 70% |
3. 50% | 4. 20% |
10 to 15 distinct conical or triangular structures in the human kidney are seen in renal ______ and are known as renal ____________.
1. | pelvis; calyces | 2. | medulla; pyramids |
3. | cortex; columns of Bertini | 4. | cortex; lobes |
All of the following regarding juxtamedullary nephrons in human kidneys are correct except:
1. the entire nephron is located in the superficial cortex of the kidney
2. the renal corpuscle comprises a glomerulus and a glomerular capsule
3. blood arrives at the glomerular capillaries via an afferent arteriole
4. the proximal convoluted tubule leads into a long nephron loop
The part of the nephron where both hydrogen and potassium ions are secreted into the tubular fluid is the
1. Malpighian body | 2. proximal convoluted tubule |
3. loop of Henle | 4. distal convoluted tubule |
Specialized smooth muscle cells mainly in the walls of the afferent arterioles called the Juxtaglomerular cells secrete:
1. ADH | 2. angiotensin |
3. aldosterone | 4. renin |
The hormone produced by the adrenal cortex, when stimulated by angiotensin II, that causes increased sodium and water reabsorption in the distal convoluted tubules, is:
1. renin | 2. aldosterone |
3. antidiuretic hormone | 4. cortisol |