Human Female Reproductive Organs.

In the ball-producing(prenominal) reproductive system, ova are produced in the ovaries, both petty(a) organs set in the pelvic cavity at a lower place and to every side of the bellybutton. The ovaries overly secrete the internal secretions estrogen and progesterone. The estrogen hormone causes the change of the lining of the uterus and vagina in the ahead of time arrange of the menstrual rack. The estrogen hormone is also responsible for(p) for female secondary sex characteristics such as pubic hair and breasts, and they affect other tissues including the genital organs, skin, hair, blood vessels, bone, and pelvic muscles. progesterone induces secretory changes in the lining of the uterus that is very most-valuable in case the egg invites fertilized. Being a steroid, progesterone is secreted mostly by the corpus luteum, a root script of cells formed in the ovary by and by the follicle ruptures during the release of the egg cell. If medical dressing does not take place, the secretion of progesterone decreases and menstruation occurs. If impregnation does occur, progesterone is secreted during pregnancy by the placenta and acts to hold on spontaneous abortion. The hormone also prepares the mammary glands for milk production. subsequently an ovum matures, it passes into the uterine tube, or fallopian tube. If there are sperm from sexual carnal knowledge (or artificial insemination) fertilization occurs .

The ovum, either fertilized or unfertilized, then passes deck the fallopian tube, aided by cilia in the tube, and into the womb, or uterus, a orotund organ specialized for maturation of a fertilized egg.         An inner uterine layer of tissue, the endometrium, undergoes ! changes as a result of the changing levels of the hormones secreted by the ovaries. The endometrium is thickest during the part of the menstrual cycle in which a fertilized ovum would be expected to present the uterus and is thinnest just after menstruation. If no fertilized... If you want to get a full essay, launch it on our website: OrderEssay.net

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