Thorax Muscles Flashcards Preview

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Flashcards in Thorax Muscles Deck (4)
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1

Intercostal Muscles

External / Internal / Innermost

2

Serratus Posterior Inferior

O: Spinous process T11 - L2
I: 9 -12th rib
A: Pulls ribs downwards ( assists in exhalation )

3

Serratus Posterior Superior

O: Nuchal L. + spinous process C7 - T3
I: rib 2 - 5
A: Helps to lift the ribs ( inhalation )

4

Diaphragm

Is a muscle in the Thoracic cage which separates the thoracic cavity from the abdominal cavity. ( dome shaped )
O: Inferior Aponeurosis
I: Right / Medial / Left Leaflet + the left and right crus attach to the L1 - L4