Abdomen Flashcards
Rectus abdominis origin
Pubic symphysis and crest
External Oblique origin
Lower ribs
Internal oblique origin
Thoracolumbar fascia, iliac crest, inguinal ligament
Transversus abdominis origin
Thoracolumbar fascia, iliac crest, inguinal ligament
Cremaster origin
Internal oblique
Psoas major origin
Lumbar vertebrae
Iliacus origin
Iliac fossa
Quadratus lumborum origin
Iliac crest
Rectus abdominis insertion
costal margin/ribs including xiphoid process
External Oblique insertion
Iliac crest (lateral part), linea alba, pubic tubercle
Internal oblique insertion
Lower ribs, linea alba, pubic crest
Transversus abdominis insertion
Linea alba, pubic crest
Cremaster insertion
Surrounds testes
Psoas major insertion
Lesser trochanter of femur
Iliacus insertion
Lesser trochanter of femur
Quadratus lumborum insertion
12th rib
Rectus abdominis action
Flexes trunk, supports abdominal contents
External Oblique action
Flexes trunk, rotates trunk to opposite side*, compresses abdominal contents
Internal oblique action
Flexes trunk, rotates trunk to same side*, compresses abdominal contents
Transversus abdominis action
Compresses abdominal contents
Cremaster action
Raises testes
Psoas major action
Flexes the thigh
Iliacus action
Flexes the thigh
Quadratus lumborum action
Laterally flexes the vertebral column
