What do the hyoid muscles function in?

The infrahyoid muscles are responsible for the positioning of the hyoid bone along with the suprahyoid muscles. They play an active role in swallowing and the movement of the larynx. More specifically, all infrahyoid muscles (except the sternothyroid) depress the hyoid.

The suprahyoid muscles are four muscles located above the hyoid bone in the neck. They are the digastric, stylohyoid, geniohyoid, and mylohyoid muscles. The mylohyoid muscles are thin, flat muscles that form a sling inferior to the tongue supporting the floor of the mouth.

Beside above, how do I remember my hyoid muscles? Mnemonic

  1. C: constrictor muscle (middle pharyngeal)
  2. H: hyoglossus muscle.
  3. D: digastric muscle (intermediate tendon)
  4. S: stylohyoid muscle.
  5. G: geniohyoid muscle.
  6. M: mylohyoid muscle.
  7. T: thyrohyoid muscle.
  8. O: omohyoid muscle.

what is the functional difference between Suprahyoid muscles and Infrahyoid muscles?

13.11). Both groups of muscles are involved with depression of the mandible and subsequent opening of the mouth, movement of the tongue, swallowing, and speaking. The infrahyoid muscles stabilize the hyoid bone so that the suprahyoid muscles have a firm base to assist with depression of the mandible.

Why does my hyoid bone hurt?

The painful symptoms are generally caused by trauma at the greater cornu of the hyoid bone with the pain radiating to other sites. Treatment for the condition ranges from injections of local anesthetic or cortisone to resection of the greater cornu.

Why does my Digastric muscle hurt?

The upper portions of the sternocleidomastoid muscle will be tender to the touch a result of trigger points from the posterior belly of the digastric muscle. The digastric can also cause a deep ear pain described as being in front of or below the ear that is not caused by an ear infection.

What does the Geniohyoid do?

The geniohyoid muscle is one of the suprahyoid muscles of the neck that is innervated by the ventral ramus of C1. Geniohyoid draws the hyoid bone up and forward during mastication and assists the opening of the mandible.

How do you stretch your Digastric muscle?

To passively stretch the posterior belly of the digastric, the patient leads the head back against the practitioner in a relaxed position with the teeth nearly approximated. For stretching of the right posterior digastric, the patient’s head is turned to the right to move the mastoid process away from the hyoid bone.

Which upper neck muscles depress the hyoid bone?

The infrahyoid muscles function to depress the hyoid bone and larynx during swallowing and speech.

What muscle depresses the hyoid bone?

Function. The infrahyoid muscles are responsible for the positioning of the hyoid bone along with the suprahyoid muscles. They play an active role in swallowing and the movement of the larynx. More specifically, all infrahyoid muscles (except the sternothyroid) depress the hyoid.

What is the Stylopharyngeus muscle?

The stylopharyngeus is a muscle in the head that stretches between the temporal styloid process and the pharynx.

What does the Suprahyoid muscle do?

The Suprahyoid Muscles. The suprahyoid muscles are a group of four muscles, located superiorly to the hyoid bone of the neck. They all act to elevate the hyoid bone – an action involved in swallowing. The arterial supply to these muscles is via branches of the facial artery, occipital artery and lingual artery.

What does the Sternohyoid muscle do?

The sternohyoid muscle’s main function is the depression of the hyoid bone. The hyoid bone is located below the mandible, or lower jaw, and is a ‘U’ shaped bone that is partially responsible for tongue movement and the action of swallowing. The sternohyoid is one of a pair of muscles responsible for this action.

What are the triangles of the neck?

The triangular space in front of this muscle is called the anterior triangle of the neck; and that behind it, the posterior triangle of the neck. The anterior triangle is further divided into muscular, carotid, submandibular and submental and the posterior into occipital and subclavian triangles.

Which of the following muscles are frequently referred to as strap muscles?

Infrahyoid muscles: These are also referred to as “strap muscles.” They include four paired muscles found on the anterolateral surface of the thyroid gland. The strap muscles result in gross movement of the larynx during swallowing and also adjust the positioning of the larynx during vocalization.

What is the muscle action which would open the mouth?

The masseter elevates the jaw, closing the mouth. The temporalis elevates and retracts the jaw. The lateral pterygoid is the only muscle of mastication that actively opens the jaw.

Which muscles extend the neck?

Splenius capitis and splenius cervicis are a pair of superficial muscles in the back of the neck. Bilateral contraction of these muscles produces extension of the neck.

Where are the strap muscles?

The infrahyoid muscles (strap muscles) are a group of four pairs of muscles in the anterior (frontal) part of the neck. The four infrahyoid muscles are; the sternohyoid, sternothyroid, thyrohyoid and omohyoid muscles. The infrahyoid muscles either originate from or insert on to the hyoid bone.