Which muscles are included in the Outer Unit: Anterior Oblique Sling System?

• A. Right serratus anterior; Right external oblique Abdominal; Left internal oblique abdominal; Left adductor muscles (Adductor Brevis, Longus and Magnus in the inner thigh)
• B. Left Serratus Anterior; Left External Oblique Abdominal; Right Internal Oblique Abdominal; Right Adductor Muscles (Adductor Brevis, Longus and Magnus in the inner thigh)
• C. Right Serratus Anterior; Right Internal Oblique Abdominal; Left External Oblique Abdominal; Left Adductor Muscles
• D. Right Serratus Anterior; Left External Oblique Abdominal; Right Internal Oblique Abdominal; Left Adductor Muscles

Answer: (A)

The outer unit’s anterior oblique sling creates a diagonal link that crosses the front of the body, connecting the shoulder girdle to the opposite hip. This pattern pairs the serratus anterior with the external oblique on one side, while the opposite side pairs the internal oblique with the adductor muscles of the inner thigh. So the right side forms the front diagonal with the right serratus anterior and right external oblique, and the left side forms the opposite diagonal with the left internal oblique and left adductors. This cross-link supports thorax stability during rotation and helps transfer force between the upper and lower body. The other options don’t reflect this cross-linked diagonal pattern.