What Are Fallopian Tubes? Function, Location and Role in Pregnancy

Fallopian tubes are two narrow, muscular tubes that connect the ovaries to the uterus and play a central role in natural conception. They capture the egg after ovulation, provide the site where sperm meets egg, and transport the early embryo to the uterus for implantation. Understanding their structure and function helps explain why tubal problems—such as blockage or damage—are a leading cause of infertility and ectopic pregnancy. A clear evaluation at the Best IVF hospital in Pollachi can identify tubal issues early and guide the right fertility plan.

Where Are the Fallopian Tubes Located?

The fallopian tubes (also called uterine tubes or oviducts) lie in the upper part of the female pelvis.

• Each tube extends from the upper corner (cornua) of the uterus outward toward the corresponding ovary.

• They run within the upper border of the broad ligament, a fold of tissue that supports the uterus, ovaries, and tubes.

• The outer end of each tube opens into the abdominal cavity, close to the ovary, but is not directly attached to it.

There are two tubes—one on each side—so that an egg released from either ovary can potentially be picked up.

For more information on tubal issues and fertility, see reasons for fallopian tube blockage.

Structure of the Fallopian Tubes

Each fallopian tube is about 8–14 cm long and is divided into four main segments, from the ovary side toward the uterus:

1. Infundibulum and Fimbriae

• The infundibulum is the funnel-shaped outer end of the tube.

• It is lined with finger-like projections called fimbriae, which hover near the ovary.

• At ovulation, the fimbriae sweep over the ovary and help capture the released egg (oocyte) and guide it into the tube.

Healthy fimbriae and normal tube movement are essential for egg pickup. Damage from infection or endometriosis can impair this function.

2. Ampulla

• The ampulla is the widest and longest section of the tube.

• It is the most common site of fertilisation, where sperm meets egg.

• The inner lining has many folds and cilia (tiny hair-like structures) that help move the egg and embryo.

3. Isthmus

• The isthmus is a narrower, more muscular segment closer to the uterus.

• It helps propel sperm toward the ampulla and later moves the embryo toward the uterine cavity.

4. Intramural (Interstitial) Segment

• This short segment passes through the muscular wall of the uterus and opens into the uterine cavity.

• Blockage here can prevent sperm from entering the tube or the embryo from reaching the uterus.

The inner lining of the tubes is made of ciliated columnar epithelium and secretory cells. Cilia beat in the direction of the uterus, while muscular contractions and tubal fluid help transport gametes and embryos.

Functions of the Fallopian Tubes in Pregnancy

The fallopian tubes are essential for unassisted (natural) conception. Their key roles include:

1. Egg Capture and Transport

• After ovulation, the fimbriae capture the egg from the surface of the ovary.

• Ciliary movement and gentle muscular contractions guide the egg into the ampulla.

If fimbriae are damaged (for example, after pelvic infection), the egg may not be picked up efficiently, reducing fertility.

2. Site of Fertilisation

• Sperm travel up through the uterus into the tubes after intercourse.

• The ampulla provides the ideal environment for sperm capacitation, egg–sperm interaction, and fertilisation.

• Tubal secretions nourish both sperm and egg and support early embryo development.

3. Embryo Transport to the Uterus

• After fertilisation, the embryo (zygote) undergoes cell division as it travels down the tube.

• Over 3–5 days, it reaches the uterine cavity as a blastocyst, ready for implantation.

If tubal movement is impaired (due to scarring, adhesions, or loss of cilia), the embryo may get stuck, increasing the risk of ectopic pregnancy (implantation in the tube instead of the uterus).

4. Protection and Selection

• The tubes help filter abnormal sperm and embryos.

• They create a controlled environment that supports early development before implantation.

When tubes are damaged or blocked, these functions are compromised, leading to infertility, ectopic pregnancy, or reduced success with natural conception.

Common Problems Affecting the Fallopian Tubes

Several conditions can impair tubal function:

• Pelvic inflammatory disease (PID) from infections such as chlamydia or gonorrhoea

• Endometriosis, causing adhesions and distortion of tubes and ovaries

• Previous pelvic or abdominal surgery, leading to scar tissue

• Hydrosalpinx (fluid-filled, damaged tube)

• Congenital abnormalities (rare)

These can cause partial or complete blockage, reduced ciliary function, or abnormal tubal movement.

Fallopian tube blockage symptoms may include difficulty conceiving, chronic pelvic pain, or history of PID, but many women have no specific symptoms and are diagnosed during fertility evaluation.

When Tubal Issues Affect Fertility Treatment

When fallopian tubes are significantly damaged or blocked:

• Natural conception chances are reduced

• Risk of ectopic pregnancy is increased

• IVF may be recommended, as it bypasses the tubes entirely

In cases of hydrosalpinx, many top fertility hospital in India programs recommend laparoscopic salpingectomy or proximal tubal occlusion before IVF to improve implantation and pregnancy rates.

A fertility doctor in Pollachi will assess tubal status using tests such as HSG, HyCoSy, or laparoscopy and discuss whether surgery, IVF, or a combination is most appropriate.

Dr. Aravind’s IVF – Pollachi 

Dr. Aravind’s IVF provides comprehensive evaluation and management of tubal factor infertility, including HSG/HyCoSy interpretation, laparoscopic assessment, hydrosalpinx surgery, and tailored IVF planning. Our clinics are 

The team reviews infection history, imaging, ovarian reserve, and partner factors to recommend the safest and most effective path to pregnancy.

Frequently Asked Questions

Q1. What is the main function of the fallopian tubes?
The fallopian tubes capture the egg after ovulation, provide the site for fertilisation (usually in the ampulla), and transport the early embryo to the uterus for implantation.

Q2. Where exactly are the fallopian tubes located?
They extend from the upper corners of the uterus outward toward each ovary, lying in the upper border of the broad ligament in the pelvis.

Q3. Can you get pregnant if one fallopian tube is blocked?
Yes, many women conceive naturally with one open and healthy tube, though it may take longer. The risk of ectopic pregnancy is higher if the other tube is damaged.

Q4. What are common signs of fallopian tube problems?
Many women have no specific symptoms. Infertility, history of PID or STI, chronic pelvic pain, or previous ectopic pregnancy are key indicators that warrant tubal testing.

Q5. Where can women in Pollachi get evaluated for tubal issues?
You can consult a fertility doctor in Pollachi at Dr. Aravind’s IVF, with branches in Pollachi, Sundarapuram, Ganapathy, and Thudiyalur, and also refer to information from a top fertility hospital in India to understand testing and treatment options for tubal factor infertility.