Not a stabilization core muscle?

• A. Latissimus dorsi
• B. Transverse abdominis
• C. Pelvic floor muscles
• D. External obliques

Answer: (A)

The main idea is identifying which muscles primarily stabilize the spine and pelvis during movement. The deep transverse abdominis, pelvic floor, and external obliques act to brace the trunk, support spinal alignment, and help maintain intra-abdominal pressure during various activities. The latissimus dorsi, on the other hand, is a large back muscle whose primary roles are pulling and moving the shoulder joint (extension, adduction, internal rotation). While it can affect trunk stability indirectly through connections like the thoracolumbar fascia, it is not considered a primary core stabilizer. So, the latissimus dorsi is not a stabilization core muscle, whereas the other listed muscles are.