Withdrawal of which of the following hormones is the immediate cause of menstruation?a)Progesteroneb)FSH and LHc)FSHd)OestrogensCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Progesterone maintains the pregnancy as ye endometriam ko disintegrates nhi hone deta and so progesterone withdrawal causes menstruation

Answer

Level of progesterone decreases when ovum is not fertilised... progesterone maintains the endometrium when it's level decreases it leads to menstruation...

Answer

A is the answer because progesterone maintain the endometrium for further details you can read ncert

Answer

Withdrawal of Progesterone is the immediate cause of menstruation.

Explanation:
Menstruation is a cyclic process that occurs in females of reproductive age and involves the shedding of the uterine lining (endometrium) along with blood and tissue through the vagina. The process of menstruation is controlled by various hormones.

- Progesterone: Progesterone is a hormone produced by the ovaries during the second half of the menstrual cycle. It plays a crucial role in preparing the uterus for pregnancy. If fertilization and implantation do not occur, progesterone levels drop, leading to the shedding of the uterine lining and initiation of menstruation.

When progesterone levels decline, it triggers a series of events that lead to menstruation:

1. Endometrial shedding: Progesterone maintains the thickened endometrium by promoting its growth and vascularization. When progesterone levels drop, the blood vessels in the endometrium constrict, leading to a decrease in blood supply. As a result, the endometrial tissue starts to break down and shed.

2. Prostaglandin release: The decline in progesterone levels stimulates the release of prostaglandins, which are hormone-like substances that cause uterine contractions. These contractions help expel the shed endometrial tissue and blood from the uterus through the cervix and vagina.

3. Menstrual bleeding: The shedding of the endometrial tissue, along with blood and mucus, results in menstrual bleeding. This bleeding occurs for a few days and marks the beginning of a new menstrual cycle.

Other Hormones:
- FSH and LH: Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are involved in the regulation of the menstrual cycle but are not directly responsible for menstruation itself.

- FSH: FSH is responsible for the development and maturation of ovarian follicles.

- Oestrogens: Oestrogens, along with progesterone, play a role in preparing the endometrium for implantation. However, their withdrawal is not the immediate cause of menstruation. It is the withdrawal of progesterone that triggers the shedding of the endometrial lining.

In summary, the withdrawal of progesterone is the immediate cause of menstruation. It leads to endometrial shedding, release of prostaglandins, and subsequent menstrual bleeding. FSH, LH, and oestrogens are involved in the regulation of the menstrual cycle but do not directly cause menstruation.

Answer

Progesterone and estrogen both are essential hormones to menstruation

Answer

The menstrual cycle consists of three phases; proliferative phase, secretory phase and menstrual phase. During menstrual phase the production of LH is considerably reduced. The withdrawal of this hormone causes degeneration of the corpus luteum and, therefore, progesterone production is reduced. The endometrium degenerates and breaks down. Thus menstruation begins

Answer

A

Answer

Correct option is progestaron it is in ncert

Similar NEET Doubts

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Withdrawal of which of the following hormones is the immediate cause of menstruation?[2006]

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Correct sequence of hormone secretion from beginning of menstruation is

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company