THORACIC MUSCLE LIST Flashcards by Kayla Kruger | Brainscape

Q

actions of external intercostals

A

inhalation

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Q

actions of internal intercostals

A

hold ribs steady

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Q

actions of diaphragm

A

inhalation and exhalation

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Q

actions of serratus anterior

A

protracts and stabalizes scapular, assists in upward rotation

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Q

origins of external intercostals

A

lower border of ribs

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Q

origins of internal intercostals

A

inferior border

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Q

origins of diaphragm

A

sternum and xiphoid process

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Q

origins of serrates anterior

A

outer surface of 8 and 9 ribs

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Q

insertions of external intercostals

A

upper border of ribs above origin

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Q

insertions of internal intercostals

A

upper border of ribs above origin

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Q

insertions of diaphragm

A

central oponeurotic tendon

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Q

insertions of serratus anterior

A

costal aspect of medial margin of scapula

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