Female Reproductive System Anatomy and Physiology

In female embryos (XX), indifferent gonads develop into ovaries due to the absence of the Y chromosome, SRY gene, TDF, and _____.

The internal female reproductive structures, including the uterus and uterine tubes, develop from embryonic _____ (Müllerian) ducts.

During embryonic development, _____ binding to estrogen is thought to protect the female brain from masculinization.

The primary female gonads, the ovaries, produce ova as well as the key steroid hormones estrogen and _____.

The most potent and dominant major estrogen secreted by the ovaries is _____.

Ovarian hormones estrogen and progesterone prepare the uterus for pregnancy and stimulate the development of mammary _____ in breasts.

The usual site of fertilization, which receives the ovum released at ovulation and transports it to the uterus, is the _____ tube.

The site of embryo implantation and subsequent fetal development throughout pregnancy is the _____.

Female erectile tissue that is associated with sexual sensation and pleasure, often contributing to orgasm, is the _____.

Serving as the birth canal, copulatory organ, and passageway for menstrual flow, the _____ receives sperm during deposition.

Female secondary sex characteristics include broadening of the hips, fat deposition in the thighsuttocks, and body-hair patterns influenced by adrenal _____.

Unlike many non-human primates, human females always possess visible _____ development regardless of lactation state.

The biological process of forming oocytes within the ovarian cortex is termed _____.

At birth, a female's ovaries contain all the _____ she will ever possess throughout her lifetime.

Oogenesis proceeds from a primary oocyte to a _____ oocyte, which is the specific developmental stage released at ovulation.

A secondary oocyte completes its second meiotic division only if it undergoes _____; otherwise, it degenerates.

Endocrine control of female reproduction operates along the hypothalamic–pituitary–ovarian (HPO) axis using GnRH, LH, FSH, estradiol, and _____.

The shedding of the inner uterine lining (endometrium) accompanied by arterial bleeding upon steroid withdrawal is called _____.

The very first menstrual cycle experienced by a female during puberty is known as _____.

The average length of the human menstrual cycle is approximately _____ days, though normal variations range from 25 to 30 days.

High circulating levels of the hormone _____ during nursing/lactation can suppress ovulation.

Historical trends show that improved nutritional status has led to an earlier age of _____ and puberty in females.

During Days 1–4 of the menstrual cycle (menstrual phase), falling steroid levels trigger the shedding of the outer _____ of the endometrium.

During Days 5–13 (follicular/proliferative phase), rising levels of _____ stimulate ovarian follicle growth.

As estradiol levels rise during the proliferative phase, a single dominant follicle develops into a mature _____ follicle.

During the endometrial proliferative phase, the uterine lining thickens and specialized _____ arteries form to resupply the tissue.

Ovulation typically occurs around Day _____ of a standard 28-day menstrual cycle.

The release of the secondary oocyte during ovulation is directly triggered by a dramatic surge in _____ hormone.

Unlike early cycle negative feedback, high sustained levels of estradiol in the late follicular phase exert _____ feedback to trigger the LH surge.

Abdominal pain or cramping experienced by some women near the time of ovulation is referred to as _____.

In most women, the two ovaries alternate the site of _____ from month to month.

Following ovulation (Days 15–28), the ruptured ovarian follicle transforms into a temporary endocrine structure called the _____.

The corpus luteum secretes high amounts of _____ and estradiol to prepare the endometrium for potential implantation.

During the luteal phase, the endometrial lining enters the _____ phase, developing mucus-secreting glands.

Progesterone secretion during the luteal phase causes a rise in basal body temperature by approximately _____ °C.

High levels of estradiol and progesterone during the luteal phase exert _____ feedback on LH and FSH, inhibiting new follicle growth.

If fertilization and pregnancy do not occur, the corpus luteum undergoes breakdown near the end of the _____ phase.

Over a lifetime without hormonal birth control or pregnancies, a woman will undergo approximately _____ to _____ reproductive cycles.

Combination hormonal birth control delivers exogenous estrogen and progesterone to exert negative feedback, inhibiting the _____ surge.

The permanent cessation of ovarian function and menstrual cycles, typically occurring around ages 50–55, is called _____.