Muscles of Mastication
The most powerful muscle of mastication; elevates the mandible; closes the mouth and originates from the zygomatic arch
What is the Masseter Muscle
Hyoid muscles in general are responsible for what movements?
What is opening of the mouth, strong depression of the mandible, and some retrusion of the mandible?
This Infrahyoid muscle pulls hyoid bone up and back and is innovated by cranial nerves II and III
What is the omohyoid muscle?
The end of a muscle attached to the least movable part.
What is the origin?
Small muscle that aids in smiling; arises from soft tissue near the angle of the mandible.
What is the Risorius?
If this entire muscle contracts it elevates the mandible; originates from the temporal fossa.
What is the Temporal Muscle or AKA Temporalis muscle?
This muscle forms the floor of the mouth, aids in depression the mandible, and its nerve supply comes from the 5th cranial nerve.
What is the Mylohyoid?
This muscle originates from the sternum and pull the hyoid bone down.
What is the sternohyoid muscle?
Blood supply to the muscles of mastication are from this.
What is the maxillary artery?
Encircles the oral cavity, like a purse string.
What is Obicularis Oris?
Elevates the mandible and originates from the medial side of the lateral pterygoid plate and maxillary tuberosity.
What is the Medial Pterygoid muscle?
This suprahyoid muscle retrudes the mandible, originates from the digastric notch of the temporal bone, and is innovated by cranial nerves V and VII.
What is the Digastric muscles?
This muscle pull the larynx down and is innovated by cranial nerves II and III
What is the Sternothyroid muscle
Muscles of mastication develop from this.
What is the Pharyngeal arch I?
Fibers for this muscle originate in the inferior border of the mandible and pull the corners of the mouth down of the skin of the upper pectoral region.
What is the platysma?
Shifting the mandible to the right is accomplished by contracting this muscle.
What is the LEFT lateral pterygoid?
This suprahyoid muscle originates from the genial tubercle at the lingual midline of the mandible.
What is the geniohyoid?
This muscle lifts the thyroid cartilage and helps depress the hyoid bone.
What is the Thyrohyoid Muscle?
This muscles main movement is to lift the shoulders in a "shrugging" action.
What is the Trapezius muscle?
Muscles of the ears, scalp, neck, eyes, nose and mouth are all innovated by this cranial nerve.
What is cranial nerve VII?
Three muscles responsible for elevation of the mandible.
What is the Medial pterygoid, masseter, and temporal muscles?
This suprahyoid muscle pulls the hyoid bone up and back and is innovated by cranial nerve VII.
What is the styloid muscle?
The lingual and superior thyroid arteries supply blood to these muscles.
What are the Sternohyoid and the Omohyoid muscles?
This muscle is involved in tilting and rotating the head.
What is the Sternocleidomastoid?
This muscle is AKA an accessory muscle to the muscles of mastication; compresses the cheeks.
What is the Buccinator?