Fallopian Tube Anatomy Quiz

Fallopian Tube Anatomy

• The fallopian tube is approximately 10 cm long.
• Parts of the fallopian tube (from medial to lateral):
  • Interstitium:
    • The intramural part of the tube embedded within the uterine wall.
    • The narrowest part of the tube.
    • Contains an anatomical sphincter made of circular muscle fibers.
  • Isthmus:
    • The second narrowest part of the tube.
    • Contains a physiological sphincter that regulates movement of a fertilized egg from the ampulla to the isthmus.
  • Ampulla:
    • The widest and longest part of the tube.
    • The site of fertilization.
    • Commonly affected by ectopic pregnancies.
    • Contains numerous mucosal folds known as plicae.
  • Infundibulum:
    • Also known as the fimbrial part of the tube.
• Adnexa: Refers to the ovary and fallopian tube together.
• Peg Cells: These cells are present in the fallopian tube lining.
• Genital Tuberculosis (TB):
  • Most commonly affects the ampulla of the fallopian tube.
  • Can lead to bilateral cornual block.
• Gonococcal Infection:
  • Can lead to fimbrial block (obstruction of the fallopian tube opening).
• Tubal Patency Testing:
  • Hysterosalpingography (HSG): Used to assess patency up to the isthmus.
  • Laparoscopy: Can assess patency up to the isthmus.
  • Hysteroscopy (using Essure): Assess patency up to the interstitium.
• Tubal Ligation: A procedure to permanently prevent pregnancy, commonly performed on the fallopian tube.