Unit 1 - Back: Deep Muscles of the Posterior Neck (Ex. I) Flashcards Preview

Gross Anatomy '15 Ex. I > Unit 1 - Back: Deep Muscles of the Posterior Neck (Ex. I) > Flashcards

Flashcards in Unit 1 - Back: Deep Muscles of the Posterior Neck (Ex. I) Deck (3)
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1
Q

middle scalene

A

O: transverse processes of C1-C2; posterior tubercles of transverse processes of C3-C7
I: posterior to groove for subclavian artery on rib 1
Inn: direct branches from C and B plexuses (C3-C8)
A: w/ ribs mobile - elevates upper ribs (forced inspiration); w/ ribs fixed - ipsilaterally flexes C spine (unilateral) and flexes neck (bilateral)

2
Q

posterior scalene

A

O: posterior tubercles of transverse processes of C5-C7
I: outer surface of rib 2
Inn: direct branches from C and B plexuses (C3-C8)
A: w/ ribs mobile - elevates upper ribs (forced inspiration); w/ ribs fixed - ipsilaterally flexes C spine (unilateral) and flexes neck (bilateral)

3
Q

anterior scalene

A

O: anterior tubercles of transverse processes of C3-C6
I: scalene tubercle of rib 1
Inn: direct branches from C and B plexuses (C3-C8)
A: w/ ribs mobile - elevates upper ribs (forced inspiration); w/ ribs fixed - ipsilaterally flexes C spine (unilateral) and flexes neck (bilateral)