30. Which is a correct comparison of the role) of hormones in male and female cy

Question

30. Which is a correct comparison of the role) of hormones in male and female cycles and sexual development? The same hormones are used by both systems; the names are simply different The hypothalamus-pituitary uses a completely separate set of hormones to communicate with ovaries in contrast to testes. In males, the hypothalamus-pituitary and testes communicate; in females the uterus is an additional actor along with the ovaries and the hypothalamus-pituitary In both males and females, there is a monthly cycle of changing hormone levels although in males, this only results in sperm production. The hypothalamus controls the male sexual development and keeps sperm production A. B. C. D. E. level, the pituitary constantly cycles the female production of eggs Which statement is NOT true about the development of an action potential? 31. There is a rapid change in polarity from about -65 mV to about +40 mV It requires two types of gated channels. The action potential ends when the polarity across the membrane reaches +40 mV Depolarization occurs when sodium gates open and allow sodium ions to enter the cell Potassium gates open after the sodium gates and allow potassium ions to leave the cell A. B. C. D. E.

Explanation / Answer

30) The pituitary gland is a small gland that is attached with hypothalamus which controls its activity. It secretes a variety of hormones which control different processes in the body. In both males & females, sex steroids estrogen, progesterone & testosterone are produced but in different levels. So, hypothalamus-pituitary doesn't produce completely separate set of hormones to communicate with testes & ovaries. So, we can ignore option B. Also it doesn't imply that same hormones are used by both systems & names are simply different because in reality they are different hormones. So, we can ignore option A. Also men do not experience a cyclical hormone shift on a monthly basis. So, we can ignore option D. In both sexes, the hypothalamus monitors and causes the release of hormones from the pituitary gland. Thus, we can ignore option E. In males, the hypothalamus-pituitary and testes communicate & in females the uterus is an additional actor along with the ovaries & the hypothalamus-pituitary. Thus, the correct option is C.

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