While the ovaries are working on developing the egg-containing follicles, the uterus is responding to the estrogen produced by the follicles, rebuilding the lining that was just shed during the last period . This is called the proliferative phase because the endometrium (the lining of the uterus) becomes thicker.
What happens during the proliferative phase of the menstrual cycle?
While the ovaries are working on developing the egg-containing follicles, the uterus is responding to the estrogen produced by the follicles, rebuilding the lining that was just shed during the last period . This is called the proliferative phase because the endometrium (the lining of the uterus) becomes thicker.
Which of the following occurs during the menstrual phase of the menstrual cycle?
This series of hormone-driven events is called the menstrual cycle. During each menstrual cycle, an egg develops and is released from the ovaries . The lining of the uterus builds up. If a pregnancy doesn't happen, the uterine lining sheds during a menstrual period.
What occurs during the secretory phase of the uterine cycle?
The secretory phase of the uterine cycle begins at ovulation . In this phase, the glands become even more complexly coiled and the endometrial lining reaches its maximal thickness, whereas the stratum basalis and myometrium remain relatively unchanged.
Which of the following is the third phase of the menstrual cycle?
Phase 3 – The Luteal Phase
This is the final phase of the menstrual cycle and lasts from the day of ovulation to the last day before the next period. Glands in the lining of the uterus called the endometrium secrete proteins in anticipation of implantation of the fertilised egg (embryo).
What are the two major phases of menstrual cycle?
The menstrual cycle may be divided into two phases: (1) follicular or proliferative phase, and (2) the luteal or secretory phase . The follicular phase begins from the first day of menses until ovulation. The development of ovarian follicles characterizes this phase.
How many days is the proliferative phase?
The first phase of the menstrual cycle is the follicular or proliferative phase. It occurs from day zero to day 14 of the menstrual cycle, based on the average duration of 28 days.
What are the 4 phases of menstrual cycle 12?
The menstrual cycle often begins at puberty between the ages of 8 and 15 (average age of 12). It usually starts two years after breasts and pubic hair start to develop. Phases of the menstrual cycle: There are four phases: menstruation, the follicular phase, ovulation and the luteal phase.
What is luteal phase of the menstrual cycle?
The luteal phase begins after ovulation . It lasts about 14 days (unless fertilization occurs) and ends just before a menstrual period. In this phase, the ruptured follicle closes after releasing the egg and forms a structure called a corpus luteum, which produces increasing quantities of progesterone.
What happens on day 21 of the menstrual cycle?
A high Day 21 progesterone level indicates ovulation and the release of an egg . A low Day 21 progesterone level suggests the cycle was anovulatory (no egg was produced). If no egg is produced, pregnancy cannot be achieved.
Can you get pregnant in the secretory phase?
Still, it's one of the most essential phases for those who are trying to get pregnant and maintain a pregnancy. During the secretory phase, a lot of important changes happen to the endometrium. These changes transform the female body into a safe place for implantation of a fertilized egg after ovulation.
What is the meaning of secretory phase?
Definitions of secretory phase. the second half of the menstrual cycle after ovulation ; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins. synonyms: luteal phase.
Why is the second half of menstrual cycle called secretory phase?
Because the uterus is secretory during the luteal phase , this part of the menstrual cycle is termed the secretory phase when referring to endometrial physiology. During this phase, the uterine smooth muscle contracts less frequently than during the follicular phase.
What day does the follicle reaches maturity?
Ovarian follicles up to ovulation
Following puberty, every month, approximately 12 to 14 days after the first day of menstruation in a “typical” monthly cycle, one of these follicles reaches maturity and is released into the uterine tube in a process called ovulation.
In which phase of menstrual cycle fertilization is possible?
Ovulation is the time when an egg is released from the dominant follicle (winner of the race) within an ovary, into the fallopian tube where it can become fertilized by sperm. This is the only time during the menstrual cycle that a woman can become pregnant.
Which phase of menstrual cycle is called proliferative?
The follicular phase of the female menstrual cycle includes the maturation of ovarian follicles to prepare one of them for release during ovulation. During the same period, there are concurrent changes in the endometrium, which is why the follicular phase is also known as the proliferative phase.
