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This lesson will explore an important structure within the female reproductive system known as the fallopian tube.

It will explain the function of the fallopian tubes and discuss several medical problems associated with this structure.

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A Look at Fallopian Tubes

All human babies, including you, start out as a tiny egg that must go on a long and complicated journey through the female reproductive system. First, the egg is created within the ovary, where it stays until ovulation occurs. When ovulation occurs, the egg is released from the ovary into the pelvic cavity. At this point in the journey, the egg is vulnerable because it is no longer contained within the safe ovary. This is when the important structure known as the fallopian tube helps the egg out.

The fallopian tube, also known as the oviduct or uterine tube, is responsible for carrying the egg to the uterus. The fallopian tube has finger-like branches, called fimbriae, which reach out into the pelvic cavity and pick up the released egg. The egg is then brought into the fallopian tube where it will travel to the uterus.

Not only does the fallopian tube collect and transport the egg, it is also the location where fertilization occurs. Sperm cells that enter the reproductive system through the vagina travel to the fallopian tube where they fertilize the egg. The fertilized egg then continues its journey to the uterus, where it will implant and safely develop into a baby.

Medical Issues with Fallopian Tubes

The fallopian tube is a crucial structure involved in successful reproduction and, like with all structures in the human body, sometimes problems occur that hinder the structure’s ability to function properly.

As you now know, the main function of the fallopian tube is to transport the egg from the ovary to the uterus.Unfortunately, there are several medical problems that can occur which cause the blockage of the fallopian tube and make it unable to transport the egg. Three of the most common medical problems that cause obstructions of the fallopian tubes are ectopic pregnancies, pelvic inflammatory disease, and endometriosis.Ectopic pregnancy is the term used to describe a pregnancy that does not occur within the uterus.

Most ectopic pregnancies happen when the fertilized egg implants into the side of the fallopian tube, instead of into the side of the uterus. An ectopic pregnancy can be life-threatening to the mother and, although the egg can implant, the fetus cannot survive in that location.To treat an ectopic pregnancy, the woman must undergo surgery to remove the implanted egg before it grows too large and ruptures the fallopian tube. Although surgery is necessary, having the surgery can cause future problems. During surgery, scar tissue can form in the fallopian tube, which can block a future egg from traveling down the fallopian tube and lead to another ectopic pregnancy.Pelvic inflammatory disease, also known as PID, is an infection of the female reproductive organs, including the uterus, fallopian tubes, and ovaries. The infectious bacteria are most commonly associated with infections due to sexually transmitted diseases, such as gonorrhea and chlamydia.

The bacteria enter the vagina during intercourse and can travel to the fallopian tubes where they infect the tissue. The infection turns healthy tissues into scar tissue, which can narrow the fallopian tube or block the entire tube.Endometriosis is a condition where tissue that is supposed to grow within the uterus instead grows within a different part of the body, including the ovaries, fallopian tubes, and even the outer surface of the uterus and the pelvic cavity. The problem with these tissues growing in unusual places is that they still act as if they are in the uterus. These tissues will shed blood and become swollen monthly, as if they were in the uterus. These tissues often damage the area they are found in and create scar tissue.

When endometriosis occurs within the fallopian tubes, the scar tissue can cause an obstruction of the tubes.

Lesson Summary

Without the fallopian tube humans would not be able to successfully reproduce because their stored eggs would not be able to travel to the uterus where they can safely develop. The fallopian tubes are not only crucial for the transport of the egg from the ovary to the uterus; they are also the location where the sperm meets the egg cell and fertilizes the egg.Although it is important for fallopian tubes to remain clear to ensure successful transport of the egg cell, there are some medical problems associated with the fallopian tubes that cause them to become obstructed, like ectopic pregnancy, pelvic inflammatory disease, and endometriosis. Most of the medical problems result in the formation of scar tissue, which blocks the tube and makes it more difficult or impossible for eggs to travel through the tube.

Vocabulary ; Definitions/Explanations

  • Ovary: location in which the egg is created and remains until ovulation occurs
  • Fallopian tube: responsible for carrying the egg to the uterus
  • Fimbriae: finger-like branches that reach into the pelvic cavity, pick up the released egg and carry it to the uterus
  • Uterus: organ in which the egg ovulates, splits and becomes a fetus
  • Ectopic pregnancy: a pregnancy that does not occur within the uterus
  • Pelvic inflammatory disease: an infection of the female reproductive organs, including the uterus, fallopian tubes, and ovaries
  • Endometriosis: a condition in which tissue that is supposed to grow within the uterus grows within a different part of the body

Learning Outcomes

The process of studying this lesson could enable you to reach these goals:

  • Recognize the purpose of a fallopian tube
  • Detail possible problems that could arise if the egg does not reach the uterus

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