Follicle-stimulating hormone (FSH) is produced by the___
hypothalamus
anterior pituitary gland.
Its role is to___
stimulate the production of LH
cause the ovaries to produce sperm
cause the egg to mature.
Luteinizing hormone (LH) is produced by the___
hypothalamus
anterior pituitary gland.
Its role is to___
cause mature egg to be released from the ovary
regulate the menstrual cycle
stimulate the production of other hormones.
“Anything you can do I can do bleeding,” said the poet Solange Claws before performing at an event called Period Party in New York. Women may feel differently about their monthly periods but their menstrual cycles are all the result of a complex dance of hormones produced by the anterior pituitary gland, the hypothalamus, and the ovaries. A woman’s menstrual cycle changes over her lifetime, influenced by age, medications, stress, weight gain or loss, pregnancy, and childbirth. Most women have about 450 monthly periods during their lives.The Female Endocrine System. Labeled are Hypothalamus, Pineal gland, Pituitary gland, Thyroid gland, Thymus gland, Adrenal glands, Pancreas, Ovary glands.Female endocrine systemNo two women have the same menstrual cycle. The average cycle lasts 28 days. It starts with the first day of bleeding and ends the day before the bleeding begins again. Menstrual cycles can be as short in duration as 21 days or as long in duration as 35 days. Bleeding can last for 3-8 days. The total blood loss during an average period is 10-35mL. However, other secretions in the flow can make the amount seem higher. The female menstrual cycle has three phases: the Follicular Phase, the Ovulatory Phase, and the Luteal Phase.Follicular Phase (Days 1-14)The follicular phase begins on the first day of bleeding and ends with ovulation. The anterior pituitary gland at the base of the brain releases follicle-stimulating hormone (FSH). This hormone causes several follicles to rise on the surface of an ovary. Each follicle contains an egg. At some point, one follicle begins to develop more rapidly than the others, and the remaining follicles are reabsorbed by the body. The maturing follicle produces the hormone estrogen, which increases during this phase and peaks at ovulation. Estrogen stimulates the endometrium (lining) of the uterus to become thicker and enriched with blood in the second part of this phase (once menstruation ends). High levels of estrogen stimulate the release of gonadotropin-releasing hormone (GnRH) from the hypothalamus in the brain. This stimulates the anterior pituitary gland to secrete luteinizing hormone (LH). Around days 12-14, surges in FSH and LH cause the egg to be released from the follicle, causing ovulation. The surge in LH also causes a brief surge in testosterone. This increases the woman’s sex drive. The graph shows how the levels of LH, FSH, estrogen, and progesterone change during an average menstrual cycle.A 3 part diagram. Top, Hormone Levels of L H, F S H, Estrogen, Progesterone. Middle, Follicular Development. Bottome, Day of Cycle. Follicular phase occurs Days 1 to 13. Ovulatory phase occurs Days 13 to 15. Luteal phase occurs Days 15 to 28.This graph shows the changes in the four primary hormones that regulate the menstrual cycle.Ovulatory Phase (Day 14)The ovulatory phase results in the release of the egg from the follicle following a surge in the levels of FSH and LH. The follicle then seals over and is called the corpus luteum. The egg enters the fallopian tube where fertilization occurs if sperm are present. If the egg is not fertilized, the body reabsorbs it in about 24 hours. If the egg is fertilized, it travels to the uterus and implants in the endometrium.Luteal Phase (Days 14-28)During the luteal phase, levels of the hormones FSH and LH decrease after the egg is released. The corpus luteum produces the hormone progesterone. If fertilization occurs, the corpus luteum will continue to produce progesterone, which prevents the endometrium from breaking down and being shed during menstruation. If fertilization has not occurred, the corpus luteum disintegrates. This causes progesterone levels to drop and signals the endometrium to be shed during menstruation.While there is a history of taboos surrounding menstruation in many cultures, it is a natural part of the female reproductive cycle. Events like the Period Party help people bring this subject into the public discourse.
3 answers
Here is a summary of the information related to the roles of specific hormones in the menstrual cycle, as well as the phases of the cycle itself:
Hormones and Their Functions
Follicle-Stimulating Hormone (FSH)
Produced by: Anterior pituitary gland.
Role:
Stimulates the maturation of follicles in the ovaries, which contain eggs.
Triggers the production of estrogen from maturing follicles.
Luteinizing Hormone (LH)
Produced by: Anterior pituitary gland.
Role:
Causes the release of a mature egg from the ovary during ovulation.
Regulates the menstrual cycle and stimulates the corpus luteum to produce progesterone.
Phases of the Menstrual Cycle
Follicular Phase (Days 1-14)
Begins on the first day of menstruation and ends in ovulation.
FSH promotes the development of several ovarian follicles.
Estrogen levels rise as the matured follicle develops and thickens the endometrium.
Ovulatory Phase (Day 14)
Marked by a surge in FSH and LH, leading to the release of the egg.
The follicle transforms into the corpus luteum after ovulation.
Luteal Phase (Days 15-28)
The corpus luteum produces progesterone, which maintains the thickened endometrium if fertilization occurs.
If fertilization does not happen, the corpus luteum disintegrates, progesterone levels drop, and menstruation begins.
Additional Information:
Menstrual cycles vary in length (21 to 35 days) and bleeding duration (3-8 days).
The total blood loss during an average period ranges from 10 to 35mL.
Cultural events like the "Period Party" aim to reduce the stigma around menstruation and promote open discussions about women’s health.
This summary encapsulates the complex interplay of hormones that regulate the menstrual cycle and provides insight into the physiological changes that women experience throughout their lives.
Follicle-stimulating hormone (FSH) is produced by the___
OPTIONS:
hypothalamus
anterior pituitary gland.
Its role is to___
OPTIONS:
stimulate the production of LH
cause the ovaries to produce sperm
cause the egg to mature.
Luteinizing hormone (LH) is produced by the___
OPTIONS:
hypothalamus
anterior pituitary gland.
Its role is to___
OPTIONS:
cause mature egg to be released from the ovary
regulate the menstrual cycle
stimulate the production of other hormones.
Here are the correct answers based on the information provided:
Follicle-stimulating hormone (FSH) is produced by the:
Answer: anterior pituitary gland.
Its role is to:
Answer: cause the egg to mature.
Luteinizing hormone (LH) is produced by the:
Answer: anterior pituitary gland.
Its role is to:
Answer: cause mature egg to be released from the ovary.
This completes the questions regarding FSH and LH. Let me know if you need further assistance!
1 answer