 | This article's lead section contains information that is not included elsewhere in the article. (July 2024) |
| Transverse abdominal muscle | |
|---|---|
 Muscles of the trunk. | |
 The transversus abdominis, rectus abdominis, and pyramidalis. | |
| Details | |
| Origin | Iliac crest, inguinal ligament, thoracolumbar fascia, and costal cartilages 7-12 |
| Insertion | Xiphoid process, linea alba, pubic crest and pecten pubis via conjoint tendon |
| Artery | Subcostal arteries |
| Nerve | Thoracoabdominal nn. (T6-T11), Subcostal n. (T12), iliohypogastric nerve (L1), and ilioinguinal nerve (L1) |
| Actions | Compresses abdominal contents (bilateral), rotates trunk ipsilaterally (unilateral) |
| Identifiers | |
| Latin | musculus transversus abdominis |
| TA98 | A04.5.01.019 |
| TA2 | 2375 |
| FMA | 15570 |
| 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.