Female reproductive system

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The main body of the female reproductive system is a female sex gland - ovary. This is paired organ. Each gland is oval-shaped body of the small sizes (Fig. 23). Are the ovaries in the pelvis, adhering to his side walls. In the surface layer of ovarian tissue contains a small spherical form of education - follicles (Fig. 24). Each of them is one of the female sex cell - egg cell (see Fig. 24, a), surrounded by a layer of cells follicular epithelium. By the time puberty in each ovary there are several thousand such follicles with young (immature) egg cells. Here in the follicles produce the female sex hormones. With the onset of puberty begins the maturation of the egg cells. Generally, for every 3-4 weeks Matures one sex cell (much less can ripen two egg cells and more); the process of maturation of the egg includes a number of highly complex transformations that occur in the reproductive cell, and in the follicle. The follicle increases significantly, then it is accumulated liquid and it turns into a bubble (the so-called grafov bubble), which grows and reaches the surface of the ovary. Simultaneously completes the maturation of the egg cells. The accumulated fluid breaks grafov bubble and egg cell is outside of the ovary. And in the cavity of the former Grafova bubble formed a blood clot, which grows cells. In these cells appears substance of yellow color and, thus, to the place Grafova bubble there is a kind of an organ called the yellow body. The latter is a gland of internal secretion and produces a hormone that regulates complex changes in a woman's body, which is accompanied pregnancy. If pregnancy does not occur, then yellow body absorbed (around 14 days), and then starts a new follicle maturation.

the structure of the female genital organs in pictures
Fig. 23. Longitudinal median cut the female genital organs.
1 - ovary; 2 - fallopian tube; 3 - uterus; 4 - bladder; 5 - the middle section of the pelvic bones; 6 - the urethra; 7 - clitoris; 8 - large labia; 9 - labia minora; 10 - cervix; 11 - rectum; 12 - sacrum; 13 - vagina; 14 - the anal opening.
the cut of the ovary and uterusFig. 24. Schematic representation of a longitudinal incision of the ovary (a) and transverse incision in the uterus (b).
a: 1 - primary follicle, 2 - growing follicle, 3-white body, 4 - grafov bubble, 5 - yellow body; b: 1 - the fundus of the uterus, 2 - the uterus, 3 - the body of the uterus, 4 - cervix, 5 - the outer layer of the uterine serous membrane (perimetry), 6 - middle layer of the uterus, muscle layer (myometrium), 7 - internal layer of the uterus mucous membrane (the endometrium), 8 - fallopian tube, 9 - ovary, 10 - vagina.

Egg cell (egg), coming from the ovary, falls into the peritoneal cavity, and then with the current fluid - in the fallopian tube, also known as the fallopian tube (see Fig. 23, 24, b). The length of the fallopian tubes - 10-12 see the End of it, turned to the ovary encloses the last, forming extending in a funnel. Pipe wall contains smooth muscle tissue, which are peristaltic movement, promoting the movement of egg cells in the direction to the uterus; the internal surface of pipes lined with mucous membrane covered with epithelium with atrial cilia, which is also important for the transition egg cells in the uterus. It is in the fallopian tube egg cell meets with sperm, and after their merger (fertilization) begins development of the embryo of a new human body...
In the complex internal genital organs of the uterus is the largest organ, with its Central position (see Fig. 23, 24). It is the second (after the fallopian tube) link the ways that outputs sexual products. But belong to this body and other very important functions, which are determined by the features of its structure. In the uterus grows and develops the germ. Her leading role in the expulsion of the fetus during the act of delivery.