Abdominal internal oblique muscle
| Internal abdominal oblique muscle | |
|---|---|
The internal abdominal oblique muscle. | |
Muscles of the trunk. | |
| Details | |
| Origin | Inguinal ligament, iliac crest and the lumbodorsal fascia |
| Insertion | Linea alba, pectineal line of pubis (via conjoint tendon) and ribs 10-12. |
| Artery | Subcostal arteries |
| Nerve | Thoracoabdominal nn. (T7-T11), subcostal n. (T12), iliohypogastric n. (L1) and ilioinguinal n. (L1) |
| Actions | Bilateral: Compresses abdomen Unilateral: Ipsilateral trunk rotation |
| Identifiers | |
| Latin | musculus obliquus internus abdominis |
| TA98 | A04.5.01.017 |
| TA2 | 2373 |
| FMA | 13891 |
| Anatomical terms of muscle | |
The internal abdominal oblique muscle, also internal oblique muscle or interior oblique or musculus obliquus abdominis internus, is an abdominal muscle in the abdominal wall that lies below the external abdominal oblique muscle and just above the transversus abdominis muscle.