Thorax Muscles Flashcards
1
Q
Intercostal Muscles
A
External / Internal / Innermost
2
Q
Serratus Posterior Inferior
A
O: Spinous process T11 - L2
I: 9 -12th rib
A: Pulls ribs downwards ( assists in exhalation )
3
Q
Serratus Posterior Superior
A
O: Nuchal L. + spinous process C7 - T3
I: rib 2 - 5
A: Helps to lift the ribs ( inhalation )
4
Q
Diaphragm
A
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
