Progesterone is secreted by
Progesterone is secreted by
Fallopian tube
Corpus luteum
Ovary
Oviduct
The Correct Option is B
Solution and Explanation
Progesterone is the principle female sex hormone secreted by corpus luteum. This hormone is also secreted by adrenal cortex and placenta in small amounts.
After ovulation, when egg is released the graafian follicles degenerates leading to the formation of corpus luteum. The corpus luteum secretes progesterone which is responsible for maintaining pregnancy in women. This hormone performs important functions like:
- It helps in maintaining the walls of the uterus, thereby helping in attaching embryo to the uterine wall.
- It also helps in development of placenta and growth of alveoli in mammary glands.
When the egg is not fertilized, the corpus luteum starts degenerating and reduces the secretion of progesterone. The low levels of this hormone causes linings of the uterus to break down leading to menstruation.
Top Questions on Menstrual Cycle
- 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
- Biology
- Menstrual Cycle
- In which of the following mammals the menstrual cycle occur ?
- CUET (UG) - 2023
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- Arrange the following in correct sequence with respect to the events of menstrual cycle:
(A) Development of primary follicle to graafian follicle
(B) Attainment of peak level in luteinising hormone
(C) Release of ovum by graafian follicle
(D) Formation of corpus luteum
Choose the correct answer from the options given below:
- CUET (UG) - 2023
- Biology
- Menstrual Cycle
- From the following table, select the option that correctly characterizes various phases of menstrual cycle :
Menstruation phase Follicular phase Luteal phase (1) Regeneration of endometrium High level of progesterone Developing corpus luteum (2) Matured follicle Regression of corpus luteum Ovulation (3) Menses Developing corpus luteum Follicle maturation (4) Menses L.H. Surge Regeneration of endometrium - KCET - 2023
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- Menstrual Cycle
- Menstrual cycle exhibited by
- KCET - 2022
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- Menstrual Cycle
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- Solutions
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