Dan has taught college Nutrition and Anatomy courses for over 5 years. He has a B.S. in Exercise Physiology from Furman University and a M.S. in Dietetics & Nutrition from Florida International University. He is a Registered Dietitian (RD) and a Certified Exercise Physiologist (EP-C)
What do Gene Simmons, lead singer for the band KISS, and an upset four-year-old have in common? If you said that they are both known to stick out their tongues, you are correct.
While performing his famous songs on stage, Gene Simmons will often stick out his tongue, and as you know, upset children have been known to stick their tongues out at people they do not like. Did you know that both Gene Simmons and an upset four-year-old have to use their genioglossus muscle in order to stick out their tongues?
The genioglossus muscle is a fan-shaped extrinsic muscle of the tongue. Extrinsic muscles of the tongue refer to muscles that attach to the tongue and function to move the tongue.
Genioglossus Muscle: Origin
The origin of a muscle is the location of the body where the muscle begins or starts. The genioglossus muscle originates from the back part of the symphysis menti, which is the line in the front middle of the mandible (lower jawbone) located at the chin. The first part of the name genioglossus comes from the Greek word genion which means chin, a reference to the origin of this muscle.
Genioglossus Muscle: Insertion
The insertion point of a muscle is the location of the body to which the muscle attaches and is the ending point of the muscle. The genioglossus muscle inserts to two different places. 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. The last part of the name genioglossus comes from the Greek word glossa which means tongue, a reference to this insertion point of the muscle.
Genioglossus Muscle: Action
The main actions of the genioglossus muscle are to protrude and depress the tongue. Have you ever stuck your tongue out at someone, maybe when you were much younger and someone made you really mad? When you stuck out your tongue, you were using your genioglossus muscle to protrude your tongue. Are you able to curl your tongue? Curling your tongue uses your genioglossus muscle to depress the middle of the tongue while the outer parts of the tongue are lifted up.
The genioglossus muscle is a fan-shaped extrinsic muscle of the tongue, meaning that is attaches to the tongue and functions to help move the tongue.
The genioglossus muscle originates from the symphysis menti of the mandible and then attaches to two different locations in the mouth. Part of the genioglossus muscle meshes with the muscle fibers of the tongue while the other part of the muscle attaches to the hyoid bone.
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).
Medical Disclaimer: The information on this site is for your information only and is not a substitute for professional medical advice.
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