What are the 4 stages of menstrual cycle GCSE?
The menstrual cycle can be broken down into 4 stages: Stage A: Days 1-5 – Menstruation. Stage B: Days 5-12 – Building uterus lining. Stage C: Days 12-15 – Ovulation.
What happens during the menstrual cycle GCSE?
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 .
How do hormones control the menstrual cycle GCSE?
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, progesterone maintains the uterine lining.
What is FSH GCSE?
FSH: Stimulates egg development and the release of oestrogen. Birth control tablets contain high levels of progesterone and oestrogen. The oestrogen inhibits FSH production so that eggs cease to develop. FSH is used to treat infertility because it stimulates the production of eggs.
What is progesterone GCSE?
Progesterone is produced by the empty follicle in the ovary after the egg has been released. This hormone maintains the lining of the uterus during the second half of the menstrual cycle. If a woman becomes pregnant the follicle continues to produce progesterone and a placenta is formed.
Can u get pregnant on your period?
Can a girl get pregnant if she has sex during her period? Yes, a girl can get pregnant during her period. This might happen when: A girl has bleeding that she thinks is a period, but it’s bleeding from ovulation .
What is the first menses called?
Your first menstrual period is called menarche (say “MEN-ar-kee”). It usually starts sometime between ages 11 and 14. But it can happen as early as age 9 or as late as 15. If you are a teenage girl, see your doctor if you have not started having periods by age 15.
What happens in the first 4 days of the menstrual cycle?
The follicular phase: The time between the first day of the period and ovulation. Estrogen rises as an egg prepares to be released. The proliferative phase: After the period, the uterine lining builds back up again. Ovulation: The release of the egg from the ovary, mid-cycle.
What gland releases Oestrogen?
Hormones and the Endocrine System
|Where the hormone is produced||Hormone(s) secreted|
|Parathyroid glands||Parathyroid hormone (PTH)|
|Thyroid gland||Thyroid hormone|
Where is Oestrogen made?
Oestradiol is produced in women of childbearing age, mostly by the ovaries. Oestriol is the main oestrogen produced during pregnancy, mostly in the placenta. Oestrone, produced by the adrenal glands and fatty tissue, is the only type of oestrogen produced after menopause.
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 is the grade for menstrual cycle and pregnancy GCSE Biology?
Menstrual Cycle and Pregnancy Question Paper Level Edexcel Subject Biology Exam Board GCSE(9-1) Topic Animal Coordination, Control and Homeostasis Sub Topic Menstrual Cycle and Pregnancy Booklet Question Paper Time Allowed: 38 minutes Score: /31 Percentage: /100
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.
Which hormone is involved in the menstrual cycle quiz?
Menstrual cycle quiz 1 A 2 B 3 C 4 D. Progesterone is involved in many different processes during the menstrual cycle. It causes the endometrium to become more receptive to implantation of a fertilised ovum. 5 A 6 B 7 C 8 D. Where is gonadotrophin-releasing hormone produced? 9 A 10 B