Question

A defect in which of the following forms the structure marked below?

• A. Internal oblique
• B. External oblique
• C. Parietal peritoneum
• D. Fascia transversalis

Answer 1

The Correct Option is D

The depicted structure in the image corresponds to a defect associated with the fascia transversalis. To understand this association, let's break down the relevant anatomical layers of the abdominal wall:

• External Oblique: This is the outermost layer of the abdominal muscles, contributing to the formation of the inguinal ligament. However, defects here typically affect the superficial regions.
• Internal Oblique: Positioned beneath the external oblique, this layer provides further muscle support, but is not commonly associated with defects forming deep structures.
• Parietal Peritoneum: This is the innermost lining of the abdominal cavity, serving as a protective membrane, but generally not implicated in structural defects leading to hernias.
• Fascia Transversalis: Just beneath the internal oblique, this fascia constitutes the deep abdominal wall layer. Its weakness or defect directly contributes to the formation of structures such as inguinal hernias or other similar protrusions.

Conclusively, when discussing defects that form structures like the one depicted, the fascia transversalis is the likely component involved.