Infrahyoid muscles

The infrahyoid muscles or strap muscles are a group of four paired muscles in the anterior neck below the hyoid bone, within the muscular triangle. They are responsible for depressing the hyoid during swallowing.

The four muscles are:

Each muscle is supplied by different nerves from the ansa cervicalis.

Clinical importance

The muscles are retracted apart in the midline to access the thyroid gland for thyroidectomy.

History and etymology

The name "strap muscles" comes from their long and flat shape, similar to a belt or strap 3

Head and neck anatomy
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Article information

rID: 41216
Section: Anatomy
Synonyms or Alternate Spellings:
  • Strap muscles

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