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What are the abdominal muscles
Rectus Abdominis, Transverse Abdominis, Obliques internal and external
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What are the orgin and insertion of the rectus abdominis?
- O- pubic crest adn sumphysis
- I- Xiphoid process, costal cartilage of ribs 5,6,7
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What are the orgin and insertion of external obliques? What direction does the muscle fibers run?
- O-External surface of 5-12 ribs inferior borders
- I- Abdominal aponeurosis to linea alba, pubic crest, pubic tubercle, and anterior iliac crest
- The fibers run downward
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What are the orgin and insertion of internal obliques? What directions do the fibers run?
- O-Thoracolumbar facia, inguinal ligament ,iliac crest
- I- 10,11,12 ribs anterior borders, linea alba and crest of pubis via conjoint tendon
The fibers run upward
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What are the insertion and orgin of transvers abdominis? What direction does the fibers run?
- O- Inguinal ligament, iliac crest, thoracolumbar facia
- I- linea alba, pubic crest and pecten of pubis via conjoint tendon.
the fibers run horizontally
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This compresses the abdomen and a muscle of resperation
Transverse abdominis
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