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9 Cards in this Set

  • Front
  • Back
Sacrospinalis (Erector spinae)
Origin: Cervical, thoracic, and lumbar vertebrae

Insertion: Cervical, thoracic, and lumbar vertebrae

Action: Extends the spine
Diaphragm
Origin: Inner surfaces of lower six ribs

Insertion: Central tendon of the diaphragm

Action: Pulls central tendon inferiorly
External intercostal
Origin: Inferior border of rib above

Insertion: Superior border of rib below

Action: Draws ribs together and raises them
Internal intercostal
Origin: Superior border of rib below

Insertion: Inferior border of rib above

Action: Draws ribs together and lowers them
External oblique
Origin: External surface of lower ribs

Insertion: Linea alba

Action: Compresses the abdomen
Internal oblique
Origin: Inguinal ligament

Insertion: Linea alba

Action: Compresses the abdomen
Transversus abdominis
Origin: Inguinal ligament

Insertion: Linea alba

Action: Compresses the abdomen
Rectus abdominis
Origin: Pubic crest

Insertion: Xiphoid process of the sternum

Action: Compresses abdomen
Quadratus lumborum
Origin: Iliac crest

Insertion: Transverse processes of upper lumbar vertebrae

Action: Flexes the spine