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Muscular System: Abdominal Wall and Ribs OIA
BI 301L: Anatomy and Physiology (Portland State University)
15
Anatomy
Undergraduate 3
10/30/2011

Additional Anatomy Flashcards

 


 

Cards

Term
External oblique origin
Definition

Origin: ribs 5-12

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Term
External oblique insertion
Definition

Insertion: anterior half of iliac crest, symphysis and superior pubis

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Term
External oblique action
Definition

Action: compresses abdomen, depresses ribs, flexes spine, unilateral contraction causes contralateral rotation of waist

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Term
Internal oblique origin
Definition

Origin: iliac crest, inguinal ligament and thoracolumbar fascia

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Term
Internal oblique insertion
Definition

Insertion: ribs 10-12, costal cartridges 7-10, pubis

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Term
Internal oblique action
Definition

Action: compresses abdomen, depresses ribs, flexes spine, unilateral contraction causes ipsilateral rotation of waist

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Term
Transverse abdominis origin
Definition

Origin: iliac crest, thoracolumbar fascia, inguinal ligament, and cartilidges of ribs 7-12

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Term
Transverse abdominis insertion
Definition

Insertion: linea alba, pubis

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Term
Transverse abdominis action
Definition

Action: compresses abdomen

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Term
External intercostals origin
Definition

Origin: inferior margin of ribs 1-11

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Term
External intercostals insertion
Definition

Insertion: superior border of rib below

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Term
External intercostals action
Definition

Action: elevates and protracts ribs

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Term
Internal intercostals origin
Definition

Origin: superior margin of ribs 2-12

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Term
Internal intercostals insertion
Definition

Insertion: inferior border of rib above

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Term
Internal intercostals action
Definition

Action: depresses and retracts ribs

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