Vordere und hintere Bauchwandmuskeln/en: Unterschied zwischen den Versionen
Becher (Diskussion | Beiträge) (Die Seite wurde neu angelegt: „<tr> <td><b>origin</b></td> <td><i>Crista iliaca</i></td> <td><i><b>M. psoas major:</b></i><br>surface layer: Lateral surfaces of the 12th thoracic vertebral b…“) |
Becher (Diskussion | Beiträge) (Die Seite wurde neu angelegt: „<tr> <td><b>insertion</b></td> <td>12th rib, rib extensions of the 1st-4th lumbar vertebra </td> <td>together as <i>M. iliopsoas</i> on <i>trochanter minor</i>…“) |
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| − | <td> | + | <td>together as <i>M. iliopsoas</i> on <i>trochanter minor</i> of <i>Os femoris</i></td> |
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Version vom 3. Januar 2020, 08:53 Uhr
General information
The anterior and posterior abdominal wall muscles are composed of the anterior, straight (M. rectus abdominis and M. pyramidalis) and the posterior, deep (M. quadratus lumborum and M. psoas major) abdominal wall muscles. The M. psoas major forms together with the M. iliacus the M. iliopsoas. Only the M. psoas major belongs topographically to the posterior abdominal wall muscles. Functionally, the M. psoas major belongs to the hip muscles.
The most important functions of the abdominal wall muscles are the movement of the trunk, the stabilization of the spine and the tension of the abdominal wall. They belong to the expiratory auxiliary breathing muscles and support breathing by pulling the thorax downwards through their movement. By increasing the intraabdominal pressure, they enable the so-called abdominal press.
A schematic drawing of the muscles (M. rectus abdominis, M. pyramidalis, M. quadratus lumborum and M. iliopsoas) can be displayed by clicking on the respective name in the "WebViewer".
Front, straight abdominal wall muscles
| M. rectus abdominis | M. pyramidalis | |
| origin | cartilage of the 5th-7th rib; processus xiphoideus of the sternum | pubic bone (ventral at the insertion of the M. rectus abdominis) |
| insertion | pubic bone (between tuberculum pubicum and symphysis) | Linea alba (runs inside the rectus sheath) |
| function | Ventral flexion, straightening of the pelvis, abdominal pressure, exhalation | Tensioning the Linea alba |
| innervation | Nervi intercostales (Th5-12) | Nervus subcostalis (Nervus intercostalis 12) |
<segmenter border="1">https://dornheim.cloud/index.php/apps/segmenter/embedding/view?identifier=dVJAHzBAmFyK</segmenter>
Back, deep abdominal wall muscles
| M. quadratus lumborum | M. iliopsoas: M. psoas major and M. iliacus | |
| origin | Crista iliaca | M. psoas major: surface layer: Lateral surfaces of the 12th thoracic vertebral body, the 1st-4th thoracic vertebral body. Lumbar vertebral body and the corresponding disci intervertbrales deep layer: processi costarii of the 1st-5th lumbar vertebra M. iliacus: fossa iliaca |
| insertion | 12th rib, rib extensions of the 1st-4th lumbar vertebra | together as M. iliopsoas on trochanter minor of Os femoris |
| Funktion | bei einseitiger Kontraktion erfolgt eine Lateralflexion des Rumpfes zur selben Seite bei beidseitiger Kontraktion dient es der Bauchpresse und der Ausatmung |
Flexion und Außenrotation des Hüftgelenks bei einseitiger Kontraktion (Punctum fixum am Femur): Lateralflexion der Lendenwirbelsäule zur selben Seite bei beidseitiger Kontraktion: ermöglicht das Aufrichten des Rumpfes aus der Rückenlage |
| Innervation | Nervus subcostalis und Äste des Plexus lumbalis | direkte Äste aus dem Plexus lumbalis und Nervus femoralis (Th12-L4) |
weiterführende Links
