Omohyoid muscle

The video tutorial discusses the omohyoid muscle, part of the infrahyoid muscle group located under the hyoid bone. It details the anatomy of the omohyoid, which is divided into superior and inferior bellies, and its connection to the carotid sheath. The infrahyoid muscles, including the omohyoid, play a crucial role in positioning the hyoid bone, aiding in swallowing and larynx movement. The omohyoid also helps maintain low pressure in the internal jugular vein, enhancing blood return to the heart. The video concludes with a call to explore more resources on Kenhub.

Which of the following muscles is NOT part of the infrahyoid muscle group?

• Sternohyoid

• Thyrohyoid

• Omohyoid

• Masseter

Where does the inferior belly of the omohyoid muscle originate?

• Superior border of the scapula

• Body of the hyoid bone

• Sternum

• Larynx

What structure does the intermediate tendon of the omohyoid muscle connect to?

• Larynx

• Thyroid gland

• Carotid sheath

• Jugular vein

What is the primary role of the infrahyoid muscles?

• Rotating the head

• Flexing the neck

• Positioning the hyoid bone

• Elevating the hyoid bone

How does the omohyoid muscle assist in venous return from the head?

• By elevating the larynx

• By compressing the carotid artery

• By maintaining low pressure in the internal jugular vein

• By stabilizing the sternum