The fimbriae catch the mature egg and channel it down into the fallopian tube when it is released from the ovary. Fallopian tube itself is highly movable muscular structure capable of precisely coordinated movement. The uterine end of the fallopian tube, called the isthmus, prevents the embryo from being released into the uterus until just the right time for implantation, which is about 4 to 7 days after ovulation. The tube is much more complex than a simple pipe, and the lining of the tube is folded and lined with microscopic hair like projection called cilia, whose beating pushes the egg and embryo along the tube, the tubal lining also produces a fluid that nourishes the egg and embryo during its sojourn in the tube. Damages to fallopian tubes usually occur through pelvic infection, often due to unknown causes.
Pelvic tuberculosis is a fairy common cause of tubal damage in India.
It is a silent disease, and most women suffering from pelvic tuberculosis are unaware of this fact. There are also certain other abnormalities in which fallopian tubes get damaged but they are very minimal. These abnormalities can be treated successfully through unani herbal medications.