Question
1, 3 and 4
Which of the following factors would decrease GFR? A fall in plasma protein concentration (which decreases plasma oncotic pressure.) An obstruction such as a kidney stone in the tabular system Vasodilation of the afferent arterioles (which increases capillary blood pressure.) Reset Selection which of the factors determine thedegree of water reabsorption in any given segment of the renal tubule? The relative "leakiness" of the tight junctions between adjacent tubular epithelial cells. The pressure of aquaporins on the luminal membrane of tabular epithelium cells. The extent of sodium reabsorption in the region All of the above Reset Selection Which of the following steps associated with glucose reabsorption involves the expenditure of(any form of) energy? Activity of the basolateral Na+-k+ ATPase pump. Glucose Contransport (with sodium) across the luminal membrane Synthesis of renin, which controls glucose reabsorption. Glucose exit from the tubular cell basolateral membrane. Both (a) and (b) Sodium reabsorption in the distal portions of the nephron is directly stimulated by Anglotensin II Antidiuretic Hormone Renin Atrial natriuretic peptide Aldosterone
Explanation / Answer
1. The answer is (B)
This is because when there is a greater hydrostatic pressure in the Bowman's capsule the glomerular filtration rate is decreased
3.The answer is (E)
Cause both the steps have involvement of ions which requires the expenditure of energy.
4.The answer is (E)
Aldosterone is solely responsible for the regulation of sodium and potassium in our body.When there is a decrease of pressure then the adrenal gland is stimulated by the stretch receptors in the kidney to release aldosterone which further increases the sodium reabsorption from the urine
