In: Anatomy and Physiology
1. As solute is filtered out of the blood and becomes a part of the filtrate within the renal corpuscle, water will be
a. filtered out of the blood as well
b. Reabsorbed to the blood
c. Excreted in smaller amounts
d, Secreted into the renal tubule
2. Which of the following would increase calcium reabsorption by the proximal convoluted tubule?
a. Consuming a diet high in calcium
b. Break down of bone releasing calcium into the blood
c. A high solute concentration in the blood
d. Calcitonin secretion into the blood
e. Parathyroid hormone secretion into the blood
3. Reabsorption occurs when
a. Filtered solute is transported from the lumen of the renal tubule to the blood of the peritubular capillaries
b. Solute is transported from the blood of the peritubular capillaries to the lumen of the distal convoluted tubule
c. A protein is transported across the glomerular filtration membrane
d. Filtered solute is transported from the glomerular capillaries to the capsular space of the renal corpuscle
e. Solute that has not been filtered is excreted
1) a. Filtered out of the blood as well.
Explanation- Everything is filtered from the blood in the glomerulus into the bowman's capsule except proteins and blood cells.All other solutes and water are filtered.Therefore option a is correct.
2) e. Parathyroid hormone secretion into the blood.
Explanation- Parathyroid hormone is released by parathyroid glands. It helps in regulation of calcium levels in the blood.It increases the calcium in the blood by increasing the reabsorption of calcium from the tubules of kidney,by reabsorbing calcium from intestines and by demineralization of bones. Calcitonin does the opposite.
3) a. Filtered solute is transported from the lumen of the renal tubule to the blood of the peritubular capillaries.
Explanation- Maximum reabsorption occurs in the proximal convoluted tubule and it happens after the solute enters the renal tubule after being filtered in the renal corpuscle. This reabsorbed solute goes from lumen of renal tubule to the peritubular capillaries.