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Transverse arytenoid

Other Terms: Arytenoideus transversus, Musculus arytenoideus transversus, Muscle aryténoïdien transverse

Muscle parts

None

Latin name

Musculus arytenoideus transversus

Latin muscle parts

None

Group

Branchial arch muscle – sixth arch (Laryngeal muscle)

Etymology

The English name for this muscle is the crosswise muscle of the ladle shaped cartilage. The term arytenoideus comes from the Greek arytaina meaning “ladle or dipper” and the suffix eidos meaning “shape or form.” The Latin term transversus means “crosswise” and comes from Latin trans meaning “across, beyond, or through” and the Latin verb vertere meaning “to turn.”

Origin

Muscular process and adjacent lateral margin of one arytenoid cartilage

Insertion

Muscular process and adjacent lateral margin of the opposite arytenoid cartilage

Action

Pull the arytenoid cartilages towards each other to narrow the glottis.

Nerve supply

Vagus nerve (Cranial nerve X)

Blood supply

The laryngeal muscles receive blood from both the subclavian and external carotid arteries. The thyrocervical trunk of the subclavian gives rise to the inferior thyroid, which gives rise to the inferior laryngeal artery. This artery enters the larynx from below. Entering the larynx from above is the superior laryngeal artery, which is a branch of the superior thyroid artery from the external carotid.

Latin

Musculus arytenoideus transversus

French

Muscle aryténoïdien transverse

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