MRCP UK EXAMINATIONS

Detailed explanation-1: -The transversalis fascia is a thin layer of connective tissue lining most of the abdominal cavity between the posterior surface of the transversus abdominis and superficial to the extraperitoneal fat and peritoneum.

Detailed explanation-2: -The aponeurosis of the transversus abdominis muscle participates in comprising the rectus sheath. This is a multilayered aponeurosis that encloses the biggest portion of the rectus abdominis and pyramidalis muscles on their anterior and posterior sides.

Detailed explanation-3: -The transversus abdominis (TrA) muscle is the deepest of the 6 abdominal muscles. It extends between the ribs and the pelvis, wrapping around the trunk from front to back. The fibers of this muscle run horizontally, similar to a back support belt.

Detailed explanation-4: -This is called its “sheath". Beyond the rectus abdominis, there is another band of aponeurosis, the linea semilunaris, which separates the rectus abdominis from the external and internal obliques.