Transverse abdominal muscle

Transverse abdominal muscle
Muscles of the trunk.
The transversus abdominis, rectus abdominis, and pyramidalis.
Details
OriginIliac crest, inguinal ligament, thoracolumbar fascia, and costal cartilages 7-12
InsertionXiphoid process, linea alba, pubic crest and pecten pubis via conjoint tendon
ArterySubcostal arteries
NerveThoracoabdominal nn. (T6-T11), Subcostal n. (T12), iliohypogastric nerve (L1), and ilioinguinal nerve (L1)
ActionsCompresses abdominal contents (bilateral), rotates trunk ipsilaterally (unilateral)
Identifiers
Latinmusculus transversus abdominis
TA98A04.5.01.019
TA22375
FMA15570
Anatomical terms of muscle

The transverse abdominal muscle (TVA), also known as the transverse abdominis, transversalis muscle and transversus abdominis muscle, is a muscle layer of the anterior and lateral (front and side) abdominal wall, deep to (layered below) the internal oblique muscle. It is thought by most fitness instructors to be a significant component of the core.