Buccinator
Buccinator
Buccinator (/bʌkˈsɪneɪtər/) is a thin, flat muscle of the cheek, located in the facial region of the skull. It is primarily involved in the act of mastication, or chewing, and is considered one of the muscles of facial expression.
Etymology
The term "buccinator" is derived from the Latin word "bucca," meaning "cheek." It is often referred to as the "trumpeter muscle" due to its role in blowing air out of the mouth, similar to the action of playing a wind instrument.
Function
The primary function of the buccinator muscle is to assist in mastication by pushing food between the teeth. It also aids in the act of blowing air out of the mouth and is involved in facial expression, particularly smiling.
Related Terms
- Mastication: The process of chewing food in preparation for swallowing and digestion.
- Facial expression: The use of multiple muscles to convey emotion through the face.
- Muscles of facial expression: A group of muscles, including the buccinator, that control facial movements and expressions.
Anatomy
The buccinator muscle originates from the alveolar processes of the maxilla and mandible, and the pterygomandibular raphe. It inserts into the angle of the mouth where it blends with the fibers of other facial muscles. It is innervated by the buccal branch of the facial nerve (cranial nerve VII).
Clinical Significance
Damage or paralysis of the buccinator muscle can lead to difficulty in chewing and swallowing, and may result in a condition known as buccinator muscle syndrome.
External links
- Medical encyclopedia article on Buccinator
- Wikipedia's article - Buccinator
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