20. The hormone which is released in large quantities just prior to childbirth i
ID: 3518656 • Letter: 2
Question
20. The hormone which is released in large quantities just prior to childbirth is A) estrogen. B) oxytocin. C) prolactin. D) progesterone E) growth hormone. 21. Which of the following hormones controls the production and release of glucocoticoids? A) ADH B) ACTH C) GH D) FSH E) LH 22. The lobes of the thyroid gland are connected by a tissue mass called the A) body c) cortex D) stalk E) isthmus. . 23. Calcitonin is a hormone of the A) adrenal cortex. B) thyroid gland. C) parathyrold gland D) pituitary gland. E) thymus gland Which of the following cells produce thyroxine? A) alpha cells B) oxyphil cells C) neurosecretory cells D) follicular cells 24. E) parafollicular cells 25. The hormone released in response to low blood calcium levels is A) oxytocin. B) parathyroid hormone. C) thyroxine. D) growth hormone E) calcitonin 26. The hormone that inhibits the action of osteoclasts is A) oxytocin. B) vasopressin. C) calcitonitn. D) parathyroid hormone. E) thyroxine.Explanation / Answer
20. b) oxytocin
Oxytocin is the hormone that is released in large amounts just before childbirth because it causes successive dilation of cervix which is necessary for the process of childbirth.
21. b) ACTH
Adreno corticospinal tropic hormone is produced by adrenal cortex and controls the release of glucocorticoids.
22. e) isthmus
Isthmus is the tissue massage that connects two lobes of the thyroid gland.
23. b) thyroid gland
Calcitonin is secreted by thyroid gland and it reduces concentration of blood calcium levels when it is too high.
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