Lab R. Knowledge 33 Flashcards

1
Q

Elevates 3rd, 4th, and 5th ribs

A

Pectoralis minors

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2
Q

Elevated the sternum

A

Sternocleidomastoids

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3
Q

Depress the ribs

A

Internal intercostals

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4
Q

Compressed abdominal contents and increases abdominal pressure

A

Abdominal muscles

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5
Q

Elevated 1st and 2nd ribs

A

Scalenes

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6
Q

Elevated ribs

A

External intercostals

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7
Q

Main inspiratory muscle

A

Diaphragm

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8
Q

Muscles used to force exhalation

A

Abdominal muscles & internal intercostals

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