Questions tagged [menstrual-cycle]

Tag for use on questions related to the regular natural change that occurs in the uterus and ovaries that make pregnancy possible.

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Why don't women ovulate more frequently?

As far as I understand, women release egg cells on a relatively consistent schedule, and there are times when no egg cells are present in the uterus/fallopian tubes. Why don't women release eggs more ...
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16 views

Characteristic of menstrual blood

Why is the character of bleed/blood in normal menstrual cycle different from mid cycle bleed(Spotting/breakthrough bleeding)
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2answers
37 views

When does LH surge actually occur?

I’ve seen many textbooks saying that LH surge occurs in the Follicular phase while others say it occurs in the Ovulatory phase. I’ve tried googling this, only to end up knowing two things: 1) It ...
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How can the symptoms of ovulation (pms or pmdd) occur if one is menstrating? [duplicate]

Even if your period is lasting overly long. Wouldn't starting to ovulate end menstrating?
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1answer
873 views

Why clotting does not occur during Menstruation

As we know when we get injured our body's clotting systems stop the bleeding. So why does it take days for menstruation to stop ?
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1answer
150 views

Menstrual cycle and luteinizing hormone (LH)

What is the effect of increased concentration of LH on the follicle at the start of the menstrual cycle? I know that increased levels of FSH at the beginning causes follicles to mature and release ...
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1answer
6k views

Why doesn't ovulation occur in both ovaries simultaneously?

I know that in human body ovulation takes place at only 1 ovary every month. But development of a follicle depends on FSH levels in the blood, and since both the ovaries are exposed to the same blood ...
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0answers
29 views

What is the volume of menstrual flow in non human hominidae?

I'm looking for reliable data related to menstruation in animals, with especial focus on apes. I have found that some articles and cientific studies point that only chimpanzees have copious ...
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2answers
45k views

Why do the hormones FSH and LH decrease when the follicle is maturing and does size of follicle change during menstruation phase

There are three phases in menstrual cycle. In follicular phase of menstrual cycle, the level of FSH and LH would rise because they would stimulate ovarian follicle to mature. However, when I check ...
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1answer
2k views

Does TSH and Growth hormone have any role in menstruation?

Actually, I came across this on a mcq (multiple choice question) exam: Name the hormone which has no role in menstruation: A. LH B. FSH C. GH D. TSH (only 1 correct option) Both FSH and LH have ...
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1answer
1k views

Polar bodies in females

What is the fate of first and second polar bodies formed during the menstrual cycle in human females? Do they degenerate? Does any other mammal also produce polar bodies?
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1answer
619 views

How to measure GnRH in menstrual cycle?

I am interested in pulse frequencies of GnRH (gonadotropin-releasing hormone) in the menstrual cycle (MC) i.e. 28 +/- 7 days. I would like to study its pulsatile nature i.e. within one MC, not same ...