I: | is released when an excessive loss of fluid from the body activates osmoreceptors in the body. |
II: | prevents dieresis by facilitating water reabsorption from the initial and proximal parts of the tubules. |
1. | cross target cell membrane and influence gene activity |
2. | cause vasoconstriction |
3. | be secreted by postganglionic sympathetic neurons |
4. | increase blood glucose levels |
I: | Glomerulus is a tuft of capillaries formed by the efferent arteriole |
II: | Afferent arteriole forms the peritubular capillary network |
III: | Vasa recta is absent or highly reduced in juxtamedullary nephrons |
1. | Only III is correct |
2. | I is correct but II and III are incorrect |
3. | I, II and III are incorrect |
4. | I and II are correct |
I: | is lined by cuboidal brush bordered epithelium |
II: | reabsorbs 70-80 percent of electrolytes and water |
1. | Proximal convoluted tubule |
2. | Loop of Henle |
3. | Distal convoluted tubule |
4. | Collecting duct |
1. | about 25 – 30 mg of urea is excreted out per day |
2. | 125 ml per minute urine is produced |
3. | about 200 L carbon dioxide is removed by the lungs per minute |
4. | 1100-1200 ml of blood is filtered by the kidneys per minute |
1. | Pavo | 2. | Ornithorhynchus |
3. | Salamandra | 4. | Hippocampus |
Which one of the following hormones reduces blood pressure?
1. Antidiuretic hormone
2. Atrial Natriuretic factor
3. Aldosterone
4. Angiotensin-II
Terrestrial adaptations necessitated the production of :
1. | Highly toxic nitrogenous wastes like urea and uric acid |
2. | Lesser toxic nitrogenous wastes like urea and uric acid |
3. | Lesser toxic nitrogenous wastes like ammonia and urea |
4. | Highly toxic nitrogenous wastes like ammonia and urea |