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9 Cards in this Set

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diaphragm
pulls central tendon downward, increasing the vertical and anterolateral dimensions of the thorax
external intercostals
expansion of rib cage
internal interchrondal intercostals m.
expansion of rib cage
serratus anterior m.
Elevates 8-9 upper ribs
serratus posterior superior m.
elevates ribs 2-5
sternoclidomastoid m.
raises sternum & thus ribs
trapezius m.
elevates & depresses shoulders
maintains trunk stability
pectoralis major m.
with arm fixed, pulls sternum and ribs upward during forced inspiration, may also facilitate forced expiration
scalenus m. : anterior, medius, & posterior
elevates 1st & second ribs.