Transverse muscle

Transverse Muscle

Transverse muscle of the abdomen. (Image from Gray's Anatomy)

The Transverse Muscle is a significant muscle in the human anatomy, specifically within the abdominal region. It is the deepest of the abdominal muscles and plays a crucial role in maintaining posture and ensuring stability of the trunk.

Structure

The transverse muscle is a broad, thin layer of muscle that wraps around the torso from front to back and from the ribs to the pelvis. Its fibers run horizontally, hence the name 'transverse'. It originates from the iliac crest, the inguinal ligament, the thoracolumbar fascia, and the inner surface of the lower six costal cartilages. It inserts into the xiphoid process, the linea alba, and the pubic crest.

Function

The primary function of the transverse muscle is to compress the abdominal contents, providing support and stability to the vertebral column. It also plays a role in forced expiration by compressing the abdominal viscera, thus pushing up the diaphragm.

Clinical Significance

Damage or weakening of the transverse muscle can lead to conditions such as diastasis recti or hernia. It is also a muscle that is often targeted in physical therapy and fitness programs to improve core strength and stability.

See Also

• Abdominal Muscles
• Human Anatomy
• Muscular System