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.
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Top UP CPMT Menstrual Cycle Questions
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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