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Abdominals & Chest
Anatomy
6
Anatomy
Graduate
09/23/2007

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Cards

Term
Transverse Abdominis
Definition
ORIGIN: Lumbar fascia, anterior 2/3 iliac crest, lateral inguinal ligament
INSERTION: rectus aponeurosis, conjoint tendon to pubic crest & pectineal line
ACTION: aids expiration, supports abdominal wall
NERVE: anterior primary rami & ilioinguinal nerve
Term
Rectus Abdominis
Definition
ORIGIN: Pubic crest & pubic symphysis
INSERTION: costal cartilages 5-7, posterior xiphoid process
ACTION: flexes trunk, aids expiration
NERVE: anterior primary rami
Term
Pyramidalis
Definition
ORIGIN: pubic crest anterior to rectus abdominis
INSERTION: lower linea alba
ACTION: reinforces rectus sheath
NERVE: subcostal nerve
Term
External Obliques
Definition
ORIGIN: anterior angles of lower 8 ribs
INSERTION: outer anterior 1/2 iliac crest, inguinal ligament, rectus aponearosis
ACTION: aids expiration, supports abdominal wall, abducts & rotates trunk
NERVE: anterior primary rami
Term
Internal Obliques
Definition
ORIGIN: Lumbar fascia, anterior 2/3 iliac crest, lateral inguinal ligament
INSERTION: rectus aponeurosis, conjoint tendon to pubic crest & pectineal line
ACTION: aids expiration, supports abdominal wall, abducts & rotates trunk
NERVE: anterior primary rami & ilioinguinal nerve
Term
Subclavius
Definition
ORIGIN: costochondral junstion of 1st rib
INSERTION: subclavian groove, inferior surface of middle 1/3 clavicle
ACTION: depresses clavicle & steadies it during shoulder movement
NERVE: nerve to subclavius
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