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6 Cards in this Set
- Front
- Back
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External Oblique
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O: external surface of the lower 8 ribs
I: iliac crest Inguinal ligament Linea alba via abdominal aponeurosis N: lower 6 thoracic spinal nerves A: unilateral: lateral flexion of trunk (vertebral column) to same side rotation opposite side Bilateral: flexion of trunk compress abdomen increasing intraabdominal pressure |
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Internal Oblique
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O: inguinal ligament
Iliac crest I: crest of the pubis Linea alba Abdominal aponeurosis N: lower 6 thoracic and 1st lumbar spinal nerves A: unilateral: lateral flexion same side rotation same side Bilateral: flexion of trunk compress abdomen increasing intraabdominal pressure |
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Transversus Abdominis
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O: inguinal ligament
Iliac crest Thoracolumbar fascia Inner surfaces of cartilage of last 6 ribs I: linea alba Abdominal aponeurosis N: lower 6 thoracic and 1st lumbar spinal nerves A: compresses abdomen increasing intraabdominal pressure |
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Rectus Abdominis
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O: crest of the pubis
I: costal cartilage of ribs 5-7 xiphoid process N: lower 6 thoracic nerves A: unilateral: participates in lateral flexion of vertebral column Bilateral: flexion of trunk compresses abdomen increasing intraabdominal pressure tenses anterior abdominal wall |
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Pyramidalis
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O: ventral surface of the pubis
I: linea alba N: branch of the 12th thoracic (subcostal) nerve A: tenses the linea alba |
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Quadratus lumborum
“hip hiker” |
O: iliac crest
iliolumbar ligament I: lower border of last rib Transverse process of lumbar vertebrae N: branches of 12th thoracic and 1st lumbar nerves A: flex trunk laterally when acting unilaterally Hike the hip in crutch walking Steady the trunk by drawing the last rib toward pelvis Fixes last 2 ribs in forced expiration |
