Serratus posterior superior muscle
| Serratus posterior superior muscle |
|---|
|
| origin |
| Neck ligament, spinous processes C6 - Th2, ligamentum supraspinale |
| approach |
| 2nd to 5th rib |
| function |
| inhalation |
| Innervation |
| Nervi intercostales ( spinal nerves of the chest part of the spinal cord ) |
| Spinal segments |
| Th2-Th5 |
The serratus posterior superior muscle ( Latin for "posterior upper saw tooth muscle" or "posterior upper saw tooth muscle") - referred to in animal anatomy as the serratus dorsalis cranialis muscle - is a skeletal muscle of the chest . It arises with a flat tendon ( aponeurosis ) on the neck ligament , on the spinous processes of the last cervical and first thoracic vertebrae and on the supraspinous ligament and starts in four prongs on the second to fifth rib .
The muscle lifts the corresponding ribs when it contracts, leading to an expansion of the rib cage and thus aiding inhalation. Like the serratus posterior inferior muscle, it is functionally part of the auxiliary inspiratory muscles .
Web links
Commons : Serratus posterior superior muscles - Collection of images, videos and audio files
literature
- Werner Penzner (Ed.): Dtv-Atlas of Anatomy . 4th edition. tape 1 . dtv, Munich 1984, ISBN 3-423-03017-8 , p. 78 .