Internus abdominis oblique muscle
| Internus abdominis oblique muscle |
|---|
|
| origin |
| Inguinal ligament , iliac crest , anterior superior iliac spine, thoracolumbar fascia , costal process L1-L5 |
| approach |
| Cartilage of the lower four ribs , linea alba |
| function |
| Flexors of the trunk, expiration |
| Innervation |
| Nervi intercostal , Nervi subcostales , nerve ilioinguinalis , nerve iliohypogastricus |
| Spinal segments |
| Th10-Th12 |
The musculus obliquus internus abdominis ( lat. For "internal oblique abdominal muscle") is one of the abdominal muscles and forms the middle layer of the muscular abdominal wall. The muscle fibers of the fan-shaped muscle plate (in humans Down outside the animal behind-the outside) (in man above-inside the animal front-inside) directed largely from kaudolateral according craniomedial and intersect with those of the abdominal external oblique muscle in a 90 ° angle. Its broad tendon plate ( aponeurosis ) forms the linea alba together with those of the musculus obliquus externus abdominis and the musculus transversus abdominis . A splitting off of the muscle forms the testicle lifter ( cremaster muscle ) in men .
The conduction pathways of the abdominal wall run in the layer between the musculus obliquus internus abdominis and the muscle transversus abdominis .
The muscle internal oblique flexes the trunk, presses the stomach together and is involved in the exhalation ( expiration ).
Individual evidence
- ^ Thomas Hill: Examination Knowledge Physikum . Georg Thieme, Stuttgart 2009, ISBN 978-3-13-152131-6 , p. 263 .
- ↑ Walther Graumann: Compact textbook anatomy . tape 2 . Schattauer, Stuttgart 2004, ISBN 978-3-7945-2062-6 , pp. 68 .
- ↑ Walther Graumann: Compact textbook anatomy . tape 2 . Schattauer, Stuttgart 2004, ISBN 978-3-7945-2062-6 , pp. 72 .