Where is digastric muscle located?
Table of Contents
Where is digastric muscle located?
The digastric muscle stretches between the mastoid process of the cranium to the mandible at the chin, and part-way between, it becomes a tendon which passes through a tendinous pulley attached to the hyoid bone. It originates from the second pharyngeal arch.
Where is the digastric muscle and what is its function?
The digastric muscle functions during swallowing, chewing, and speech. The anterior belly of the digastric is one of the three suprahyoid muscles which stabilizes the hyoid during swallowing, an action critical in protecting the airway while eating.
What is the muscle underneath your chin?
The digastric muscle, also referred to as the digastricus, is a small muscle situated under the jaw. The primary function of this muscle is to elevate the hyoid bone – a small, horseshoe shaped bone located between the thyroid cartilage and chin.
Is digastric a muscle of mastication?
Accessory Muscles of Mastication The suprahyoid muscle group is made up of the digastric muscle, mylohyoid muscle, and geniohyoid muscle. They depress the mandible against resistance when infrahyoid muscles fix or depress the hyoid bone.
What type of tissue is digastric?
this new muscle by the digastric, which is a compound muscle made up of parts of the constrictors of the first and second branchial arches. Thus, it is partly innervated by the mandibular division of the fifth cranial nerve (as is the case with other jaw muscles and the tensor…
Which of the following is an action of the digastric?
The digastric muscle is involved in any complex jaw action such as speaking, swallowing, chewing and breathing. When the digastric muscle contracts, it acts to elevate the hyoid bone. If the hyoid is being held in place (by the infrahyoid muscles), it will tend to depress the mandible (open the mouth).
How do you release the digastric muscle?
(1)” To help release the posterior belly of the digastric you can use two fingers to press and massage just below the corner of the mandible (where the x is in the above drawing). Press gently inward toward the back of your throat. If you feel your tonsils, stay above them.
What does the posterior digastric muscle do?
Digastric muscle
| Origin | Anterior belly: digastric fossa of mandible Posterior belly: mastoid notch of temporal bone |
|---|---|
| Insertion | Body of hyoid bone (via intermediate tendon and its fibrous sling) |
| Action | Depresses mandible Elevates hyoid bone during chewing, swallowing |
Why is it called digastric muscle?
The digastric muscle (also digastricus) (named digastric as it has two ‘bellies’) is a small muscle located under the jaw. The term “digastric muscle” refers to this specific muscle. However, other muscles that have two separate muscle bellies include the suspensory muscle of duodenum, omohyoid, occipitofrontalis.
What is the meaning of digastric?
Definition of digastric : of, relating to, or being either of a pair of muscles that depress the lower jaw and raise the hyoid bone during swallowing.
Which statement correctly describes digastric muscle?
Which statements correctly describe the digastric muscle? It has 2 bellies, it attaches to the mastoid portion of the temporal bone, it depresses the mandible, and it attaches to the hyoid bone. Which muscle contracts when you “pucker” your lips?
Where is Digastric triangle?
The submandibular triangle, also known as the digastric triangle, is bounded anteriorly by the anterior belly of the digastric muscle, posteriorly by the posterior belly of the digastric muscle, superiorly by the mandible, and inferiorly by the mylohyoid and hypoglossus muscles.