32. What is a primary function of somatotropin? a. regulation of the immune syst
ID: 3521208 • Letter: 3
Question
32. What is a primary function of somatotropin? a. regulation of the immune system b. activation of Vitamin D c. lengthening of the growth plate d. increased cellular production of glycogen e. none of the above 33. Which of the following hormones enhances the activation of vitamin D? b. insulin d. calcitonin e. none of the above 34. Functions of testosterone include any of the following EXCEPT: a. anabolism b. c. secondary male sex characteristics d. maintenance of the prostate gland e. all of the above are included 35. Functions of estrogen include any of the following EXCEPT: a growth of mammary gland b. proliferation of the uterine endometrium c. increased activity of HDL d. conferring secretory differentiation on the endometrium e. all are correct functions 36. Which of the following uses cholesterol in its manufacture? a. adrenaline c. erythropoietin e. none of the above 37. Which of the following travel through a portal system? a. a b. dopamine c. prolactin d. GnRH e. Both b and dExplanation / Answer
32. The main function of somatotropin or growth hormone is to stimulate liver and other tissues to secrete IGF-1 to stimulate proliferation of chondrocytes which results in bone growth. Hence answer is c lenthening of growth plate.
33. Vitamin D receptor activation in intestines, bone, kidney and parathyroid gland cells leads to maintenance of calcium and phosphorus in blood with assistance of parathyroid hormone and calcitonin. Parathormone increases osteoclast activity promoting release of calcium from bones to increase serum calcium level. Calcitonin increases osteoblastic activity and helps in bone resorption. Vit D is present in inactive form in diet and skin sources. It requires enzymatic activation in the liver in presence of sunlight or UVB rays. Hence answer is e none of above.
34.testosterone is an anabolic steroid hormone. Anabolic functions like increase in muscle mass and increase of bone density.
It causes activation of genes in sertoli cells to promote spermatogonia differentiation and thus helps in spermatogenesis.
It plays a major role in development of secondary male sexual characters like increase facial and axillary hair growth, increase bone mass.
It helps in development of prostrate gland in fetus.
35.primary function of estrogen is development of female secondary sexual characters like growth of breasts, regulation of menstrual cycle , growth of endometrium.
Estrogen helps in proliferation of endometrium durimg follicular phase of menstrual cycle.
It also increases activation of HDL , decreases LDL and promotes fat deposition.
Secretory effect on endometrium is the effect of progesterone.
Hence answer is d. Conferring secretory endometrium
36. All steroidal hormones are synthesized from cholesterol.
The steroidal hormones include
Glucocorticoids, mineralocorticoids, androgens, estrogen, progestogens and vit D.
Aldosterone is a mineralocorticoid hence uses cholesterol in its synthesis.
Hence answer is d. Aldosterone
37. The hypophyseal portal system is a system of blood vessels connecting hypothalamus with anterior pituitary gland. The hormones transported via this system are gonadotropin releasing hormone, corticotropin releasing hormone, growth hormone releasing hormone and thyrotropin releasing hormone.
Hence answer is d. GnRH.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.