sternocleidomastoid

What Does The Sternothyroid Muscle Do?

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What Does The Sternothyroid Muscle Do? The sternothyroid is a paired, flat strap of muscle that serves to fix the hyoid bone as well as depressing the larynx in phonation and in the terminal phase of swallowing. What does the sternohyoid muscle attach to? The sternohyoid muscle is a thin, narrow muscle attaching the hyoid

What Action Does The Sternocleidomastoid Perform?

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What Action Does The Sternocleidomastoid Perform? When acting together it flexes the neck and extends the head. When acting alone it rotates to the opposite side (contralaterally) and slightly (laterally) flexes to the same side. It also acts as an accessory muscle of inspiration. What does Sternocleidomastoid attach to? Origin Insertion Superior border/anterior surface of