The figure shows a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.
- B- Corpus luteum - Secretes progesterone
- A- Tertiary follicle - Forms Graafian follicle
- B- Corpus luteum - Secretes estrogen
- A- Primary oocyte - It is in the prophase-1 of the meiotic division
The Correct Option is A
Solution and Explanation
Top Questions on Menstrual Cycle
- Assertion (A): Corpus luteum secretes the hormone, progesterone. Reason (R): Hormone Progesterone is essential for maintenance of the endometrium.
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- Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: During menstrual cycle, the ovulation takes place approximately on 14th day.
Reason R: Rapid secretion of LH in the middle of menstrual cycle induces rupture of Graafian follicle and thereby the release of ovum.
In the light of the above statements, choose the most appropriate answer from the options given below.- NEET (UG) - 2024
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- Arrange the following menstrual phases in order:
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- (b) For successful pregnancy, at what phase of the menstrual cycle an early embryo (up to 3 blastomeres) should be implanted in the uterus (IUT) of a human female who has opted for Assisted Reproductive Technology (ART)? Support your answer with a reason.
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In a human female, the reproductive phase starts on the onset of puberty and ceases around middle age of the female. Study the graph given below regarding menstrual cycle and answer the questions that follow:
(a) Name the hormones and their source organ, which are responsible for menstrual cycle at puberty.
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Concepts Used:
Menstrual cycle
Menstrual cycle is the monthly series of changes a woman's body goes through while having a possibility of pregnancy. Each month one egg is released by the and this process is called ovulation. If ovulation takes place and the egg isn't fertilized, the lining of the uterus sheds through the vagina. This is a menstrual period.
Menstrual cycle irregularities can have many different causes, including:
- Pregnancy or breast-feeding.
- Eating disorders, extreme weight loss or excessive exercising.
- Polycystic ovary syndrome (PCOS)
- Premature ovarian failure
- Pelvic inflammatory disease (PID)
- Uterine fibroids