Munanjohtimissa

Munanjohtimissa, also known as fallopian tubes or oviducts, are a crucial part of the female reproductive system. These are two narrow, muscular tubes that extend from the uterus towards the ovaries. In humans, each tube is typically about 10 to 13 centimeters long and only a few millimeters in diameter. The primary function of the munanjohtimissa is to transport the egg cell, or ovum, from the ovary to the uterus.

Each munanjohtimissa is lined with cilia, which are tiny hair-like structures. These cilia beat in a coordinated fashion, creating a current that helps to move the egg cell along the tube. The fimbriae, which are finger-like projections at the end of the tube closest to the ovary, sweep over the surface of the ovary to capture the ovum when it is released during ovulation.

Fertilization, the fusion of sperm and egg, most commonly occurs within the munanjohtimissa. If fertilization takes place, the resulting zygote then travels down the tube to the uterus, where it can implant and develop into a fetus. If fertilization does not occur, the egg cell will degenerate and be absorbed by the body or expelled. Conditions affecting the munanjohtimissa, such as blockages or infections, can lead to infertility or ectopic pregnancies, where a fertilized egg implants outside the uterus, often within the tube itself.