What is the primary function of the transversus abdominis?

• A. To assist in forced exhalation
• B. To compress abdominal viscera
• C. To elevate ribs during inhalation
• D. To support the pelvic floor

Answer: (B)

The transversus abdominis is primarily responsible for compressing the abdominal viscera. This muscle wraps around the abdomen horizontally, acting like a corset that stabilizes the core and maintains intra-abdominal pressure. By compressing the abdominal contents, it plays a crucial role in various activities, including stabilizing the pelvis and spine, assisting in posture, and facilitating movements such as lifting or forceful activities that require core stability.

In addition to its role in compression, the transversus abdominis also contributes to other functions, such as providing support for the pelvic floor and aiding in forced exhalation. However, its primary and most distinctive function is the compression of the abdominal viscera, making it essential for efficient movement and respiratory mechanics.