Fallopian tubealso called oviduct or uterine tubeeither of a pair of long, narrow ducts located in the human female abdominal cavity that transport male sperm cells to the eggprovide a suitable environment for fertilizationand transport the egg from the ovarywhere it is produced, to the central channel lumen of the uterus.
One of the two uterine tubes is the pathway down which "Thick women tube" ripe ovum travels on its way to the uterus or womb. The spermatozoa from the male migrate up the tube, and it is there that they meet the ovum and fertilization…. Each fallopian tube is 10—13 cm 4—5 inches long and 0. The channel of the tube is lined with a layer of mucous membrane that has many and papillae—small cone-shaped projections of tissue.
Over the mucous membrane are three layers Thick women tube muscle tissue; the innermost layer has spirally arranged fibres, the middle layer has circular fibres, and the outermost sheath has longitudinal fibres that end in many fingerlike branches fimbriae near the ovaries, forming a funnel-shaped depository called the infundibulum.
The infundibulum catches and channels the released eggs; it is the wide distal outermost portion of each fallopian tube. Leading from the infundibulum is the long central portion of the fallopian tube called the ampulla.
The isthmus is a small region, only about 2 cm 0.
The final region of the fallopian tube, known as the intramural, or uterine, part, is located in the top "Thick women tube" fundus of the uterus; it is Thick women tube narrow tube continuous with the isthmus, and it leads through the thick uterine wall to the uterine cavity, where fertilized eggs normally attach and develop.
The channel of the intramural duct is the narrowest part of the fallopian tube. The mucous membrane lining the fallopian tube gives off secretions that help to transport the sperm and the egg and to keep them alive. The major constituents of the fluid are calcium, sodium, chloride, glucose a sugarproteins, bicarbonates, and lactic acid. Glucose is a nutrient for the and sperm, whereas the rest of the chemicals provide an appropriate environment for fertilization to occur.
Besides the cells that secrete fluids, the mucous membrane contains cells that have fine hairlike structures called cilia ; the cilia help to move the egg and sperm through the fallopian tubes.
Sperm deposited in the female reproductive tract usually reach the infundibulum within a few hours. The egg, whether fertilized or not, takes three to four days to reach the uterine cavity. We welcome suggested Thick women tube to any of our articles. You can make Thick women tube easier for us to review and, hopefully, publish your contribution by keeping a few points in mind.
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The Editors of Encyclopaedia Britannica. Learn More in these related Britannica articles: An angular pregnancy differs from a cornual…. Oviducts in all female vertebrates arise Thick women tube separate tubes with openings usually near, but not connected to, the ovaries. The oviducts, like "Thick women tube" Wolffian ducts of the testes, open to the cloaca.
Both ovaries and testes lie in the body cavity near the kidneys. Sponges, coelenterates, flatworms, and aschelminths. In many species the oviduct receives a duct from yolk vitelline glands, whose cells nourish the fertilized egg. Beyond the entrance of the duct from the yolk glands the…. Fallopian tube s often have a short dilated ampulla, or saclike swelling, just beyond the ostium.
Implantation of the egg occurs only in the uterine horns; the…. Each ovariole consists of a germarium and a series of ovarial follicles. The germarium is a mass of undifferentiated cells that form oocytes, nurse cells, and follicular cells. More About Fallopian tube 15 references found in Britannica articles Assorted References association with uterus In uterus effect of estrogen In estrogen: Sponges, coelenterates, flatworms, and aschelminths ectopic pregnancy In ectopic pregnancy In pregnancy: Ectopic pregnancy fertility and infertility In infertility: Damage of the fallopian tubes pregnancy In pregnancy: Uterine tubes View More.
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