Is genioglossus a smooth muscle?
Description: The Genioglossus (Geniohyoglossus) is a flat triangular muscle close to and parallel with the median plane, its apex corresponding with its point of origin from the mandible, its base with its insertion into the tongue and hyoid bone.
What muscles are involved in tongue protrusion?
The genioglossus (GG) muscle, which causes tongue protrusion, is innervated by the medial XIIth branch, while the hyoglossus (HG) and styloglossus (SG) muscles, which cause retraction of the tongue, are innervated by the lateral XIIth branch.
What is the Stylopharyngeus muscle?
The stylopharyngeus muscle is a long, slender and tapered longitudinal pharyngeal muscle that runs between the styloid process of the temporal bone and the pharynx and functions during the pharyngeal phase of swallowing.
What is Buccinator muscle?
The buccinator muscle plays an active role along with orbicularis oris and superior constrictor muscle during swallowing, mastication, blowing, and sucking. It aids in mastication and blowing by compressing the cheek inwards.
What muscle depresses the tongue?
The hyoglossus muscle depresses and retracts the tongue and is innervated by the hypoglossal nerve (CN XII).
Is the tongue the strongest muscle in the human body?
When it comes to versatility, perhaps the tongue is the strongest muscle. Its combination of elasticity and forcefulness gives us the ability to speak, eat and kiss – all things very desirable on a first date. However dexterous it may be though, its power does not match that of muscles such as the soleus.
What is the origin of Styloglossus muscle?
The styloglossus muscle is an extrinsic muscle of the tongue, and its origin in the styloid process of the temporal bone is well documented.
How do you build buccinator muscle?
Exercise Category: Buccinator Exercises
- Buccinator Exercise – Pipe Blows. See how long you can make ball hover.
- Buccinator Exercise – Straw Drink. Place a straw into cup and the other end flat against upper teeth.
- Buccinator Exercise – Balloon Pops.
- Buccinator Exercise – Balloon Blowing Using Only Nose.
Where does the genioglossus muscle originate in the tongue?
The genioglossus muscle originates from the genial tubercle, inserts posteriorly at the tip of the tongue and the dorsum of the tongue, and into the body of the hyoid bone (Fig. 52.1 ). The fibers retract the tip of the tongue, depress the dorsum of the tongue, and move the hyoid in an anterosuperior direction.
Is the genioglossus part of the hyoid bone?
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 the palatoglossus.
How does the genioglossus affect the upper airway?
The left and right genioglossus muscles protrude the tongue and deviate it towards the opposite side. When acting together, the muscles depress the center of the tongue at its back. Contraction of the genioglossus stabilizes and enlarges the portion of the upper airway that is most vulnerable to collapse.
What is the function of the genioglossus abductor muscle?
The genioglossus, geniohyoid, and other pharyngeal and laryngeal abductor muscles have phasic inspiratory activity synchronous with diaphragmatic contraction, in addition to their tonic activities that maintain upper airway patency in both animals and human neonates (Bartlett et al., 1973; Brouillette and Thach, 1979).