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Female Reproductive Cycle | Menstrual Cycle | Menses | Class 12 Biology
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Hi Everyone! Welcome To My Channel "Ali Academy Biology Lectures"
About This Video ........................
In This Video Lecture You Will Learn Basic Concept Of Female Reproductive system
Female Reproductive cycle: In females the production of egg is a cyclic activity as compared
to males, where gamete production and release is a continuous process beginning at puberty and
menstrual cycle and can be divided into four phases. The events of the menstrual cycle involve
involves changes in the structure and function of the whole reproductive system. It is called the
the ovaries (ovarian cycle) and the uterus (uterine cycle) and these are regulated by pituitary
In human females, the periodic reproductive cycle is completed in approximately 28 days and
lasting throughout life.
gonadotropins.
Primary steps in female reproductive cycles are:
follicle atresia.
5. If fertilization does not occur, the corpus luteum starts degenerating. The progesterone secretion
hand, inhibits the secretion of FSH from pituitary gland.
grow with its primary oocytes while the rest break down by a degenerative process known as
luteum. This yellowish glandular structure starts” secreting hormone called progesterone. This
(placenta formation).
1. The pituitary gland on the onset of puberty, releases follicle stimulating hormone (FSH) which
2. The ovary, under the stimulus of FSH, also produces estrogen hormone.-This, on one hand,
4. The follicle cells, after release of the egg. are modiied to form a special structure called corpus
hormone develops the endometrium and make it receptive for the implantation of the zygote
stimulates the development of several primary follicles. Only one of these follicles continues to
diminishes and its supporting efect on the spongy endometrium is reduced, which sufers a
3. Decrease of FSH and increase of estrogen, causes the pituitary gland to secrete luteinizing
breakdown. This causes the discharge of blood and cell debris known as menstruation. This stage
hormone (LH) which induces ovulation - the release of ovum from the follicle.
stimulates the endometrium (internal living of the uterus wall) and vascularizes it, and on the other
usually lasts for 3 - 7 days
The cycle is thus completed and the uterus is ready to enter into the next cycle. The human menstrual
Malnourishment and emotional stresses efect the female reproductive cycle, which
menstrual cycle is called menupause, after which the female stops producing the ova.
or even within the same individual at diferent times of her age. The end or complete stop of the
cycle generally repeats every 28 days although there is considerable variation in diferent individuals
may be disturbed. The cycle is not completed in its normal 28 days.
About This Channel.....................
I make these videos cause I love to draw and connect the complexity of science and medicine into art. I'm not saying. I'm 100% correct in all my videos, but I do try to obtain the information from credible sources.
One-stop destination for all biology lectures.
_ students in class 11, 12 or appearing for competitive medical exams ( NMDCAT ) will find it very beneficial
_ The videos are categories under various heading to make the students life simplified
Visit My Other Channel Playlist .....................
Class 10th Lectures:
Subscribe My Channel:
Social Link........................
Instagram:
About This Video ........................
In This Video Lecture You Will Learn Basic Concept Of Female Reproductive system
Female Reproductive cycle: In females the production of egg is a cyclic activity as compared
to males, where gamete production and release is a continuous process beginning at puberty and
menstrual cycle and can be divided into four phases. The events of the menstrual cycle involve
involves changes in the structure and function of the whole reproductive system. It is called the
the ovaries (ovarian cycle) and the uterus (uterine cycle) and these are regulated by pituitary
In human females, the periodic reproductive cycle is completed in approximately 28 days and
lasting throughout life.
gonadotropins.
Primary steps in female reproductive cycles are:
follicle atresia.
5. If fertilization does not occur, the corpus luteum starts degenerating. The progesterone secretion
hand, inhibits the secretion of FSH from pituitary gland.
grow with its primary oocytes while the rest break down by a degenerative process known as
luteum. This yellowish glandular structure starts” secreting hormone called progesterone. This
(placenta formation).
1. The pituitary gland on the onset of puberty, releases follicle stimulating hormone (FSH) which
2. The ovary, under the stimulus of FSH, also produces estrogen hormone.-This, on one hand,
4. The follicle cells, after release of the egg. are modiied to form a special structure called corpus
hormone develops the endometrium and make it receptive for the implantation of the zygote
stimulates the development of several primary follicles. Only one of these follicles continues to
diminishes and its supporting efect on the spongy endometrium is reduced, which sufers a
3. Decrease of FSH and increase of estrogen, causes the pituitary gland to secrete luteinizing
breakdown. This causes the discharge of blood and cell debris known as menstruation. This stage
hormone (LH) which induces ovulation - the release of ovum from the follicle.
stimulates the endometrium (internal living of the uterus wall) and vascularizes it, and on the other
usually lasts for 3 - 7 days
The cycle is thus completed and the uterus is ready to enter into the next cycle. The human menstrual
Malnourishment and emotional stresses efect the female reproductive cycle, which
menstrual cycle is called menupause, after which the female stops producing the ova.
or even within the same individual at diferent times of her age. The end or complete stop of the
cycle generally repeats every 28 days although there is considerable variation in diferent individuals
may be disturbed. The cycle is not completed in its normal 28 days.
About This Channel.....................
I make these videos cause I love to draw and connect the complexity of science and medicine into art. I'm not saying. I'm 100% correct in all my videos, but I do try to obtain the information from credible sources.
One-stop destination for all biology lectures.
_ students in class 11, 12 or appearing for competitive medical exams ( NMDCAT ) will find it very beneficial
_ The videos are categories under various heading to make the students life simplified
Visit My Other Channel Playlist .....................
Class 10th Lectures:
Subscribe My Channel:
Social Link........................
Instagram:
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