Admin Table of Contents
Which muscle forms a canal for the posterior belly of the digastric muscle?
stylohyoid muscle
The posterior belly originates at the medial surface of mastoid notch of temporal bone. From here it travels anteroinferiorly towards the hyoid bone, piercing the stylohyoid muscle before attaching into the intermediate tendon of digastric muscle.
What muscle is deep to the digastric muscle?
The digastric muscle (also digastricus) (named digastric as it has two ‘bellies’) is a small muscle located under the jaw….
| Digastric muscle | |
|---|---|
| Front view of neck. | |
| Details | |
| Origin | anterior belly – digastric fossa (mandible); posterior belly – mastoid notch of temporal bone |
| Insertion | Intermediate tendon (hyoid bone) |
What are the attachments of the digastric muscle?
The Digastric Muscle: Insertion The digastric muscle inserts on the hyoid bone, which is a horseshoe-shaped bone located in the middle front of the neck just above the larynx, or voice box. The digastric muscle inserts on the hyoid bone by the tendon that connects the anterior and posterior bellies of this muscle.
What muscle has an anterior and posterior belly?
digastric muscle
The digastric muscle consists of the anterior belly and the posterior belly connecting the mandible, hyoid bone and temporal bone.
What Innervates the geniohyoid muscle?
Innervation. The geniohyoid muscles are innervated by a branch of the ventral ramus of C1 from the cervical plexus which courses with the hypoglossal nerve in to the floor of the mouth.
Where is the genioglossus muscle?
tongue
The genioglossus muscle is a fan-shaped muscle that is involved in forming most of the tongue mass. It emerges from the superior mental spines and inserts on the hyoid bone as well as the inferior portion of the tongue.
What is the anterior belly of digastric?
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. Furthermore, the digastrics work to depress the mandible for jaw opening, chewing, and speech.
What is digastric Ridge?
Digastric ridge (DR) is a bony elevation present inferiorly in the mastoid cavity at the level of the mastoid process. The DR corresponds externally to the digastric groove at the medial aspect of the mastoid process, from which the posterior belly of digastric muscle originates.
What is the anterior belly of the digastric muscle?
What is the orbicularis oculi muscle?
The orbicularis oculi muscle is a muscle located in the eyelids. It is a sphincter muscle arranged in concentric bands around the upper and lower eyelids. The main function of the orbicularis oculi muscle is to close the eyelids.
What is the Sternohyoid muscle?
As for the sternohyoid muscle, it is a flat muscle located on both sides of the neck. This muscle originated from the medial edge of the clavicle bone, sternoclavicular ligament, and posterior side of the manubrium. The sternohyoid muscle then ascends the neck and attaches to the body of the hyoid bone.
What is Sternothyroid muscle?
The sternothyroid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibers from the ventral rami of C1-C3 spinal nerves.