What is the function of hyoglossus?

It is a quadrilateral muscle that originates along the whole length of the hyoid bone and inserts into the side of the tongue. The hyoglossus acts to both depress and retract the tongue.

1. Why is hyoglossus important?
2. What kind of muscle is hyoglossus?
3. Why hyoglossus is the key muscle of submandibular region?
4. What is the origin of hyoglossus muscle?
5. What do the hyoglossus and Palatoglossus muscles have in common quizlet?
6. Is hyoglossus a Suprahyoid muscle?
7. Where is the hyoglossus muscle?
8. What nerve Innervates the hyoglossus muscle?
9. What is the submandibular region?
10. What is the submandibular triangle?
11. What is submandibular gland?
12. What is the action of genioglossus?
13. What is the lingual nerve?
14. Where is the lingual artery?

Why is hyoglossus important?

Functional Anatomy

The base of tongue is composed of extrinsic tongue muscles (hyoglossus, genioglossus, styloglossus, and palatoglossus) as well as the intrinsic tongue muscles. It is essential for both the oral and oropharyngeal phases of swallowing.

What kind of muscle is hyoglossus?

The hyoglossus muscle is a thin, quadrilaterally shaped muscle in the upper neck and the floor of the mouth. It is one of the extrinsic muscles of the tongue. The submandibular ganglion suspended from the lingual nerve sits on it.

Why hyoglossus is the key muscle of submandibular region?

It receives its nerve supply from the facial nerve as soon as the exit of the nerve from the stylomastoid foramen. Its action is to draw the hyoid bone upward and backward. This is the extrinsic muscle of the tongue but forms a key muscle of the submandibular region due to its numerous relations.

What is the origin of hyoglossus muscle?

structure and function. The hyoglossus muscles originate on each side from the whole length of the greater cornua and also from the body of the hyoid. They are inserted into the posterior half or more of the sides of the tongue.

What do the hyoglossus and Palatoglossus muscles have in common quizlet?

What do the hyoglossus and palatoglossus muscles have in common? A. They both insert into the tongue and are innervated by cranial nerve XII. ... They both depress the tongue.

Is hyoglossus a Suprahyoid muscle?

Some literature includes the hyoglossus muscle as part of the suprahyoid muscles; however, in most bibliographies, it is treated as an extrinsic tongue muscle, since it does not insert into any upper bone structure as do the rest of the suprahyoid muscles.

Where is the hyoglossus muscle?

It is a quadrilateral muscle that originates along the whole length of the hyoid bone and inserts into the side of the tongue. The hyoglossus acts to both depress and retract the tongue. It receives its motor innervation via the hypoglossal nerve.

What nerve Innervates the hyoglossus muscle?

The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles.

What is the submandibular region?

The submandibular region lies between the mandible and hyoid bones and is formed by the submental and submandibular triangles. It contains the submandibular gland. ... In adults the mandible, which normally contains 16 permanent teeth, articulates with the temporal bone of the skull through the temporomandibular joint.

What is the submandibular 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.

What is submandibular gland?

The submandibular gland is the second largest of the three main salivary glands, which also include the parotid and sublingual glands. The submandibular glands are paired major salivary glands that lie in the submandibular triangle.

What is the action of genioglossus?

The primary function of the genioglossus muscle is to protrude the tongue anteriorly and deviate the tongue to the opposite side. [5] It also aids in swallowing as it will create a passage to the GIT. [5] When the left and right genioglossus muscles act together, they will depress the middle part of the tongue.

What is the lingual nerve?

The lingual nerve is one of the sensory branches of the mandibular division of the trigeminal nerve. [5] It contains general somatic afferent nerve fibers and, after chorda tympani joins it, also carries general visceral efferent nerve fibers and special visceral afferent fibers.

Where is the lingual artery?

The lingual artery is a branch of the external carotid artery between the superior thyroid and facial arteries. The lingual artery courses medially to the greater horn of the hyoid bone and crosses inferiorly and facially around the hypoglossal nerve.