Which muscle elevates the hyoid bone

The infrahyoid muscles pull the hyoid bone downwards. Acting together with the digastric muscle, the infrahyoid muscles assist in opening the jaw. Avatar icon Avatar icon Sign In. Already a Subscriber? Required Required. Forgot Password? Enter an Access Code. Sign in via: Open Athens Shibboleth. Become a subscriber to watch this video. If you have received this message in error for example, you have purchased a new subscription or activated a trial , please log out and log back in to start a new session and receive access.

Subscribe Now. We are unable to redeem your access code. Please try again another time. This muscle depresses and fixes the hyoid bone. That separates the inferior belly from the superior belly of the omohyoid. The omohyoid lies lateral to the sternohyoid. Just coming back to this 3D model, the position of that muscle I just showed you, the omohyoid, would be lateral to this muscle, the sternohyoid. It inserts here on the hyoid bone and run inferiorly and posteriorly to insert onto the scapula back here.

It runs up through the posterior triangle and into the anterior triangle to insert onto the hyoid bone and it fixes and presses the hyoid bone. On this model, this muscle is shown as one muscle, but in real life, there are two muscles, which are continuous. This portion here which attaches to the thyroid cartilage and inserts onto the hyoid bone is the thyrohyoid muscle.

Its action depends on which part is fixed. If the larynx is fixed, then it will depress the hyoid bone. It generally does depress the hyoid bone. But if the hyoid bone is fixed, it can elevate the larynx. It can raise the larynx. This muscle draws the larynx downwards. The sternothyroid and the thyrohyoid run in continuity just deep to the omohyoid and the sternohyoid. The omohyoid is lateral to the sternohyoid and it runs from the scapula through the posterior triangle and inserts onto the hyoid bone and has an intermediate tendon, which inserts onto the medial end of the clavicle.

Four muscles, infrahyoid muscles that you need to know. You can find out more about which cookies we are using or switch them off in settings. Remember me Lost your password? Log In. Don't have an account? Sign up. Username or Email.

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Infrahyoid muscles paralysis typically presents with swallowing difficulties and a hoarse voice. Paralysis of these muscles usually occurs secondary to cervical spine trauma and resulting damage to the ansa cervicalis. The majority of the infrahyoid muscles are innervated by the ansa cervicalis in their lower half, therefore, if access is required to the deeper structures in the neck, these muscles are divided in the upper half.

Neck dissection to excise malignant tumours commonly results in damage to the ansa cervicalis. Clinical Examination. An Introduction to the Arclight. Eye Drops Overview. Prescribing in Renal Impairment. Interpreting Hepatitis B Serology. Medicine Flashcard Collection. A collection of surgery revision notes covering key surgical topics.

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