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Head and Neck > Muscles of the Muscular Subdivision of the Anterior Triangle (Infrahyoid Muscles) > Flashcards

Muscles of the Muscular Subdivision of the Anterior Triangle (Infrahyoid Muscles) Flashcards

1
Q

Omohyoid

A

Origin: medial margin of the suprascapular notch

Insertion: hyoid bone

Innervation: C1-C3 via ansa cervicalis

Action: depresses and fix hyoid

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2
Q

Sternohyoid

A

Origin: manubrium of the sternum

Insertion: hyoid bone

Innervation: C1-C3 via ansa cervicalis

Action: depress hyoid

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3
Q

Sternothyroid

A

Origin: manubrium of the sternum

Insertion: oblique line of the thyroid cartilage

Innervation: C1-C3 via ansa cervicalis

Action: depresses the larynx

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4
Q

Thyrohyoid

A

Origin: oblique line of the thyroid cartilage

Insertion: hyoid bone

Innervation: C1 branch travelling with CN XII

Action: depresses hyoid or raises larynx

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