What is the innervation of genioglossus?

The genioglossus muscle is innervated by the cranial nerve XII, which is also known as the hypoglossal nerve. This muscle receives its blood supply from both the lingual artery and facial artery.

What is the innervation of the geniohyoid?

Geniohyoid muscle is innervated by the anterior ramus of spinal nerve C1 carried by the hypoglossal nerve.

What is the action of genioglossus?

The main actions of the genioglossus muscle are to protrude the tongue (stick the tongue out) and to depress the tongue (hold the middle of the tongue down while the sides come up).

Why is genioglossus called the safety muscle?

why genioglossus muscle is called as safety muscle of tongue?? Bcoz genioglossus helps in protruding the tongue. It keeps the tongue protruded. If the person falls unconscious or if u observe an epileptic attack, then the pt’s tongue may fall back due to temporary loss of motor control on tongue muscle.

Why is palatoglossus innervated by vagus?

The palatoglossus or palatoglossal muscle is a muscle of the soft palate and extrinsic muscle of the tongue. Its surface is covered by oral mucosa and forms the visible palatoglossal arch….

Palatoglossus muscle
Origin Palatine aponeurosis
Insertion Tongue
Nerve Vagus nerve (via pharyngeal branch to pharyngeal plexus)

What is omohyoid innervated by?

ansa cervicalis
The omohyoid 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.

What nerve Innervates the sternohyoid muscle?

Three of these muscles (sternohyoid, sternothyroid and omohyoid) are innervated by the ansa cervicalis – a nerve loop formed of axons exiting the spinal cord within the ventral rami of C1 to C3 and then joining the cervical plexus.

What is the attachment of the genioglossus?

The genioglossus muscle is attached to the lingual surface of the mandible at the geniotubercle and also to the hyoid complex just above the larynx.

Where is the genioglossus muscle?

The genioglossus muscle is attached to the lingual surface of the mandible at the geniotubercle and also to the hyoid complex just above the larynx. Movement forward of either or both of these anatomic structures stabilizes the tongue base along with the associated pharyngeal dilatators.

What is genioglossus muscle innervation?

Genioglossus Muscle: Innervation. Innervation is the process of the brain sending electrical impulses to the muscles of the body through a network of nerves.

How is the genioglossus used to test the hypoglossal nerve?

The genioglossus is often used as a proxy to test the function of the hypoglossal nerve, by asking a patient to stick out their tongue. Peripheral damage to the hypoglossal nerve can result in deviation of the tongue to the damaged side.

Where is the genioglossus muscle located in the throat?

Part of the genioglossus muscle attaches to the hyoid bone, which is a horseshoe-shaped bone located in the middle, front part of the throat above the larynx or voice box. The remaining part of the genioglossus muscle actually meshes together with the muscles throughout the entire length of the tongue, from tip to base.

What is the structure of the genioglossus?

Structure. Genioglossus is the fan-shaped extrinsic tongue muscle that forms the majority of the body of the tongue. Its arises from the mental spine of the mandible and its insertions are the hyoid bone and the bottom of the tongue. The genioglossus is innervated by the hypoglossal nerve, as are all muscles of the tongue except for…