Transversus Abdominis Location: Deepest layer of the abdominal muscles Function: Compresses abdominal contents, supports spine and pelvis, stabilizes the core Common Exercises: Planks, abdominal hollowing, leg raises
Anatomy of the Transversus Abdominis Origin : Iliac crest, inguinal ligament, thoracolumbar fascia, and costal cartilages of the lower six ribs Insertion : Xiphoid process, Linea alba, pubic crest Nerve Supply : Intercostal nerves (T7-T11) Subcostal nerve (T12) Iliohypogastric nerve (L1) Ilioinguinal nerve (L1)
Structure and Fiber Orientation Horizontal orientation of muscle fibers Relationship with other abdominal muscles: Rectus Abdominis, Internal Oblique, External Oblique
Function Core Stability: Supports the spine and pelvis Compression of Abdominal Contents: Assists in breathing, vomiting, and childbirth. Unilateral contraction: Trunk rotation
Role in Breathing Contribution to Forced Expiration Role in Diaphragmatic Breathing
Clinical Significance Injury and Weakness: Common issues and symptoms Rehabilitation: Exercises to strengthen the Transversus Abdominis Examples: Planks, abdominal hollowing, leg raises