The secretory phase in the human menstrual cycle is also called
The secretory phase in the human menstrual cycle is also called
The correct option is A luteal phase and it lasts for about 13 days
Introduction to menstrual cycle
The reproductive cycle in female primates is known as the menstrual cycle. In humans, the cycle repeats after every 28 days. It consists of 4 phases: menstrual phase, follicular phase, ovulatory phase and luteal/ secretory phase.
Secretory Phase
Luteal or secretory phase lasts for around 13 -14 days.
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After ovulation, the ruptured Graafian follicle changes to a corpus luteum which releases progesterone and oestrogen. Thus, this phase is called the luteal phase.
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The release of progesterone helps in maintenance of the endometrium.
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The glands in the uterine wall secrete an increasing amount of nutritious watery mucus due to which this phase is also named as secretory phase.
- This happens from the 15th to 28th day of the menstrual cycle.
Follicular Phase
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Follicular or proliferative phase lasts for about 7 - 8 days.
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During the 6th - 13th day of the menstrual cycle, the level of follicle stimulating hormone (FSH) keeps increasing and stimulates the development of the Graafian follicle.
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The developing Graafian follicle continues to release increasing levels of oestrogen which promotes the thickening and proliferation of the uterine lining. Thus this phase is known as the follicular phase or proliferative phase.
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By the end of this phase the Graafian follicle is fully matured.
Introduction to menstrual cycle
The reproductive cycle in female primates is known as the menstrual cycle. In humans, the cycle repeats after every 28 days. It consists of 4 phases: menstrual phase, follicular phase, ovulatory phase and luteal/ secretory phase.
Secretory Phase
Luteal or secretory phase lasts for around 13 -14 days.
-
After ovulation, the ruptured Graafian follicle changes to a corpus luteum which releases progesterone and oestrogen. Thus, this phase is called the luteal phase.
-
The release of progesterone helps in maintenance of the endometrium.
-
The glands in the uterine wall secrete an increasing amount of nutritious watery mucus due to which this phase is also named as secretory phase.
- This happens from the 15th to 28th day of the menstrual cycle.
-
Follicular or proliferative phase lasts for about 7 - 8 days.
-
During the 6th - 13th day of the menstrual cycle, the level of follicle stimulating hormone (FSH) keeps increasing and stimulates the development of the Graafian follicle.
-
The developing Graafian follicle continues to release increasing levels of oestrogen which promotes the thickening and proliferation of the uterine lining. Thus this phase is known as the follicular phase or proliferative phase.
-
By the end of this phase the Graafian follicle is fully matured.
