Search any question & find its solution
Question:
Answered & Verified by Expert
Read the following sentences and then answer the question given below.
I. Parathyroid hormone regulates the metabolism of calcium.
II. Vasopressin is also called anti-diuretic hormone.
III. Grave's disease is caused by malfunctioning of the adrenal gland.
IV. Oxytocin facilitates parturition by acting on the middle layer of the uterus which is made-up of striated involuntary muscles.
Which of the above statements are correct and incorrect?
Solution:
1760 Upvotes
Verified Answer
The correct answer is:
I and II are true; III and IV are false
Exophthalmic goiter is a form of hyperthyroidism, characterized by enlargement of the thyroid gland, protrusion of the eyeballs, increased basal metabolic rate, and weight loss also called Graves’ disease. It is an autoimmune disorder.
Anti-diuretic hormone or vasopressin increases the reabsorption of water in the distal convoluted tubule and collecting ducts of the nephrons of the kidneys. Hence, it reduces the amount of urine formation.
Oxytocin acts on the smooth muscles (non-striated involuntary muscles) of our body and stimulates their contraction. In females, it encourages a vigorous contraction of the uterus at the time of childbirth, and milk ejection from the mammary gland.
Parathyroid hormone (PTH) increases the Ca2+ levels in the blood. PTH acts on bones and stimulates the process of bone resorption (dissolution/ demineralisation). PTH also stimulates reabsorption of Ca2+ by the renal tubules and increases Ca2+ absorption from the digested food. It is, thus, clear that PTH is a hypercalcemic hormone, i.e., it increases the blood Ca2+ levels. Along with TCT, it plays a significant role in calcium balance in the body.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.