The accompanying diagram shows the changes that take place in the endometrium during a normal menstrual cycle. Identify the changes and select the correct option.
- a
- b
- c
- d
The Correct Option is C
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.
- CBSE CLASS XII - 2025
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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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- Menstrual Cycle
- 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.
- CBSE CLASS XII - 2024
- Biology
- Menstrual Cycle
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.
- CBSE CLASS XII - 2024
- Biology
- Menstrual Cycle
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A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
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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