Where the plasma becomes more concentrated in the nephron during urine formation and filtration?
a) ascending limb of loop of Henle
b) descending limb of loop of Henle
c) proximal convoluted tubule
d) distal convoluted tubule
What is/are the role/s of distal convoluted tubule given below?
a) osmoregulation
b) control blood pH
c) both a and b
d) none of them
How distal convoluted tubule control blood pH?
a) by secreting sodium ions
b) by secreting Hydrogen ions
c) by secreting potassium ions
d) by secreting chloride ions
The collecting duct is impermeable to water. Which of the following opens water channel in collecting duct to allow water to move out?
a) FSH
b) TSH
c) ACTH
d) ADH
Explanation: ADH (anti-diuretic hormones) which increases water reabsorption.
Which of the following hormones reduces the volume of urine?
a) oxytocin
b) aldosterone
c) vasopressin(ADH)
d) cartisol
Explanation: ADH reabsorbs water from the filtrate in the renal tubule
Tubular secretion is the transfer of materials from……..to ……….
a) renal tubular lumen---peritubular capillaries
b) peritubular capillaries -renal tubular lumen
c) renal tubular lumen---efferent arterioles
d) peritubular capillaries---afferent arteriole
