What is the menstrual cycle GCSE AQA?
The menstrual cycle is a recurring process which takes around 28 days. During the process, the lining of the uterus is prepared for pregnancy. If implantation of the fertilised egg into the uterus lining does not happen, the lining is then shed. This is known as menstruation .
What is menstrual cycle according to Ncert?
The reproductive cycle starting from the one menstruation till the next one in the female primates is called menstrual cycle. The first menstruation which begins at puberty and is called menarche . The cycle is repeated at an interval of 28-29 days.
What happens on day 14 of the menstrual cycle BBC Bitesize?
Fertilisation happens if the ovum meets and joins with a sperm cell in the oviduct. The fertilised ovum attaches to the lining of the uterus….The menstrual cycle.
|14||Ovulation occurs. The ovum travels through the oviduct towards the uterus.|
What is FSH GCSE?
Role. FSH (follicle stimulating hormone) Pituitary gland. Causes an egg to mature in an ovary. Stimulates the ovaries to release oestrogen.
What are the 4 hormones that control the menstrual cycle?
The menstrual cycle is regulated by the complex interaction of hormones: luteinizing hormone, follicle-stimulating hormone, and the female sex hormones estrogen and progesterone.
What phase is day 7 of menstrual cycle?
Follicular Phase (Day 1-14) During this phase, the ovaries ready the egg to be released into the uterus on day 14 (the day of ovulation) by increasing reproductive hormone production.
What is menstrual cycle describe it in brief class 10?
The menstrual cycle is the periodic process of ovulation in female primates that also involves menstruation. It is a cyclic process and is divided into four phases- the follicular phase, the ovulatory phase, the luteal phase, and the menstrual phase. It is this cycle that makes pregnancy in females possible.
Why does menstruation occur Class 10?
Ans. Menstruation occurs in females when the egg produced inside the cervix is not fertilized. Since the egg does not fuse with the male gamete, so the thick and soft lining of uterus having a lot of blood capillaries in it are not required.
Can a woman get her period while pregnant?
After a girl is pregnant, she no longer gets her period. But girls who are pregnant can have other bleeding that might look like a period. For example, there can be a small amount of bleeding when a fertilized egg implants in the uterus. Doctors call this implantation bleeding.
What is the menstrual cycle?
The menstrual cycle is a recurring process which takes around 28 days. During the process, the lining of the uterus is prepared for pregnancy. If implantation of the fertilised egg into the uterus lining does not happen, the lining is then shed. This is known as menstruation.
What happens during menstruation?
This is known as menstruation. If a woman becomes pregnant, the placenta produces progesterone. This maintains the lining of the uterus during pregnancy and means that menstruation does not happen. The menstrual cycle lasts for approximately 28 days. Graphs can be used to follow changes to the hormones during this process.
What hormones are involved in the menstrual cycle?
Several hormones are involved in the menstrual cycle of a woman: follicle stimulating hormone (FSH) causes the maturation of an egg in the ovary luteinising hormone (LH) stimulates the release of the egg oestrogen is involved in repairing and thickening the uterus lining, while progesterone maintains it
What happens on the 14th day of the menstrual cycle?
Around day 14 of the cycle, an egg is released from a follicle in the ovaries – this is ovulation. If this egg is fertilised and embeds itself in the thickened lining of the uterus, the lining is maintained and the woman becomes pregnant.