Organ
Ampulla of the uterine tube
The broad tubal segment where fertilization usually occurs
High-yield
The ampulla is the usual site of fertilization and the most frequent site of tubal ectopic pregnancy.
Overview
The ampulla occupies much of the uterine tube between the infundibulum and narrower isthmus. A relatively broad lumen contains branching mucosal folds lined by ciliated and secretory cells. This environment supports gamete interaction and the early stages of embryonic development.
Reference facts
- Location
- Lateral to the isthmus and medial to the infundibulum, supported by the mesosalpinx.
- Parts
- A wide, relatively thin-walled segment with complex mucosal folds and ciliated and secretory epithelium.
- Blood supply
- Tubal branches from ovarian and uterine arteries join within the mesosalpinx.
- Innervation
- Autonomic fibers arrive through ovarian and uterovaginal plexuses; visceral sensory pathways return mainly to lower thoracic and upper lumbar segments.
- Venous/Lymphatic drainage
- Veins communicate with ovarian and uterine plexuses; lymph follows ovarian and uterine connections to lumbar and pelvic nodes.
- Relations
- Curves near the ovary, with the mesosalpinx beneath it and the infundibulum at its lateral end.
- Function
- Supports fertilization and transport of the early embryo toward the uterus.
Clinical correlation
An embryo implanted in the ampulla is outside the uterine cavity. Tubal bleeding or rupture can cause hemoperitoneum; the anatomical location alone does not reliably predict the timing or severity of presentation.
Frequently asked questions
Where is the ampulla of the uterine tube located?
Lateral to the isthmus and medial to the infundibulum, supported by the mesosalpinx.
What does the ampulla of the uterine tube do?
Supports fertilization and transport of the early embryo toward the uterus.
What are the parts of the ampulla of the uterine tube?
A wide, relatively thin-walled segment with complex mucosal folds and ciliated and secretory epithelium.
What is the blood supply of the ampulla of the uterine tube?
The ampulla of the uterine tube is supplied by the tubal branches from ovarian and uterine arteries join within the mesosalpinx.