Health, 07.11.2020 09:40 ssiy

Menarche : a. indicates the start of female reproductive activity, and is triggered by the pituitary gland
b. generally occurs for most women between 45 and 55 years of age.
c. results in lower hormone levels
d. none of the above

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Answer from: ZackaryF

Explanation: Menarche is the occurrence of a first menstrual period in the female adolescent. Menstruation is the monthly shedding of the functional layer of the uterine endometrial lining that occurs when ovulation is not followed by fertilization. It occurs approximately every 28 days, with a range from every 21 to every 45 days. The average age of onset of menarche is 12.4 years. Most menstrual periods last between 3 and 7 days. Menarche signals maturation of the adolescent female body. It commonly is associated with the ability to ovulate and reproduce.

Menarche is the result of complex interactions between the hypothalamic, pituitary, and ovarian hormones. It also can be affected by thyroid, adrenal, and pancreatic hormones. Pulsatile hypothalamic production of gonadotropin-releasing hormone (GnRH) at puberty stimulates the pituitary production of follicle stimulating hormone (FSH) and luteinizing hormone (LH). FSH and LH, in turn, stimulate an increase in ovarian production of estrogens, primarily estradiol, and androgens. Estradiol promotes maturation of ovarian follicles, with one follicle gaining dominance during each menstrual cycle. Increasing levels of estrogens stimulate uterine endometrial proliferation and eventually cause a surge of LH production by the pituitary. This LH surge causes ovulation or rupture of the dominant ovarian follicle.

Answer from: Quest

I’ve personally felt invisible all my life, especially when a friend turned out to be fake and didn’t seem to take any type of interest in what i said or any type of input i said. being invisible is a terrifying feeling to experience due to the fact you feel like no one sees you and just sees you (sorry if that doesn’t make sense). it’s like a deep emptiness that no one can fill, just you; you have to fix that emptiness by yourself and you don’t really want , or in some cases want to be invisible. i can see many invisible people when they intentionally stay away from people that can potentially hurt them in any way. also, when a person intentionally breaks off a connection so they aren’t seen by people.hope it

Answer from: Quest

The penis goes in the vagina kid, the 31 year old girlfriend must be your mom asking you are you ready to go to bed.

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Menarche : a. indicates the start of female reproductive activity, and is triggered by the pituitar...

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