What is a suprahyoid muscle?
The suprahyoid muscles are those above or superior to the hyoid bones of the neck. They elevate the hyoid bone when the mandible is fixed in place, and lower the mandible when the hyoid is held firm by muscles beneath it.
How are suprahyoid muscles named?
The suprahyoid muscles are four muscles located above the hyoid bone in the neck. They are the digastric, stylohyoid, geniohyoid, and mylohyoid muscles. They are all pharyngeal muscles, with the exception of the geniohyoid muscle. The digastric is uniquely named for its two bellies.
What are the suprahyoid and infrahyoid muscles?
The suprahyoid muscles include digastric, stylohyoid, mylohyoid and geniohyoid. The infrahyoid muscles include omohyoid, sternohyoid, sternothyroid and thyrohyoid. The hyoid muscles act to stabilise the trachea and play a vital part in swallowing and speech.
What is the functional difference between suprahyoid muscles and infrahyoid muscles?
Suprahyoid and infrahyoid muscles are two types of muscles attached to the hyoid bone. Suprahyoid muscles lie above the hyoid bone, while infrahyoid muscles lie beneath the hyoid bone. These muscles play very important roles in stabilizing the trachea, swallowing, and speech.
What is Infrahyoid?
Infrahyoid muscles are also known as “strap muscles” which connect hyoid, sternum, clavicle and scapula. They are located below the hyoid bone on the anterolateral surface of the thyroid gland and are involved in movements of the hyoid bone and thyroid cartilage during vocalization, swallowing and mastication.
When swallowing what do the suprahyoid muscles do?
Whenever the infrahyoid muscles stabilize the hyoid bone, then the suprahyoid muscles help in the depression of the mandible and thus help in wide opening of the mouth. The suprahyoid muscles participate in improving the flexion movement of the neck.
Which of the following is not considered a suprahyoid muscle?
Which of the following muscles is NOT considered a suprahyoid muscle? The sternothyroid muscle is located inferior to the hyoid bone.
What is the function of the infrahyoid muscles?
Infrahyoid muscles: Together, the infrahyoid muscles play an active role in swallowing through the movement of the larynx. The omohyoid, sternohyoid, and thyrohyoid act to depress the hyoid bone. The thyrohyoid elevates the larynx whereas the sternothyroid depress the larynx.
What are Infrahyoid and suprahyoid muscles?
They are grouped according to their position to the hyoid bone, the suprahyoid muscles lie above the hyoid bone and the infrahyoid muscles lie beneath it. These muscles act to stabilise the trachea and play a vital part in swallowing and speech.