Biology, asked by romanatahseen786, 2 months ago

differentiate between follicular phase and luteal phase of menstrual cycle

Answers

Answered by rituyadav131004
0

Answer:

The follicular phase

The follicular phase, which some people call the proliferative phase, also starts on the first day of a person’s period. It is simultaneous with the menstrual phase.

At the start of the cycle, a brain region called the hypothalamus signals the pituitary gland to release follicle stimulating hormone (FSH).

FSH stimulates the ovaries to create several small sacs called follicles. These each contain an immature egg. The healthiest egg will mature while the rest of the follicles will absorb back into the body.

As the follicle matures, the body releases extra estrogen. This stimulates the uterine lining to thicken. The thickened lining can provide the necessary nutrients to a fertilized egg.

The follicular phase typically lasts around 10–16 daysTrusted Source. This phase will end when a person ovulates.

The luteal phase

The final phase of the menstrual cycle is called the luteal phase.

During the luteal phase, the follicle morphs into a mass of cells called the corpus luteum. The corpus luteum releases progesterone, which will keep the uterine wall thick and ready for a fertilized egg to implant.

If the egg becomes fertilized, the body will produce human chorionic gonadotropin (hCG). hCG helps keep the uterine lining thick for the fertilized egg to develop into an embryo.

However, if the egg does not become fertilized during ovulation, the corpus luteum will dissolve into the body. Both estrogen and progesterone levels will drop, which marks the beginning of the menstrual phase.

During the luteal phase, a person may experience symptoms of premenstrual syndrome (PMS). These may include:

headaches

mood changes

bloating

pain, tenderness, or swelling of the breasts

changes in sex drive

weight gain

difficulty sleeping

food cravings

The length of the luteal phase can vary, but it tends to be around 14 daysTrusted Source on average.

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