Buccinator

A muscle situated in the cheek, playing a crucial role in facial expressions and oral functions.

The buccinator is a thin, flat muscle located in the cheeks of the face, forming a part of the oral cavity's muscular structure. It is primarily responsible for compressing the cheek and enabling the movement of food during chewing, as well as aiding in the act of blowing or sucking. This muscle is integral in maintaining the position of the food between the molars and preventing it from accumulating in the vestibule of the mouth.

Terminologia Anatomica

buccinator

System

Muscular system

Function

The primary functions of the buccinator muscle are essential for effective mastication and communication. During eating, this muscle works to keep food positioned between the teeth for efficient grinding, minimizing the possibility of food escaping into the buccal cavity. The buccinator also contributes to oral suction, such as when drinking through a straw or during breastfeeding, by helping to create negative pressure in the mouth. Furthermore, it facilitates facial expressions such as smiling and whistling, showcasing its importance in non-verbal communication. By coordinated movement with other facial muscles, the buccinator enriches both social interactions and physiological functions related to eating and speaking.

Location

The buccinator muscle is found in the lateral aspect of the face, lying deep to the tissue of the cheeks. It originates from the outer surfaces of the maxilla and mandible, specifically the molar areas, and extends horizontally towards the midline of the face. It inserts into the orbicularis oris, a circular muscle surrounding the mouth, forming a connection that enhances its functionality. The buccinator is situated in proximity to other important structures such as the parotid duct, which transports saliva from the parotid gland, and branches of the facial nerve that innervate the facial muscles.

Did You Know?

The buccinator muscle is often referred to as the 'trumpeter's muscle' due to its role in blowing and sound production.
In infants, the buccinator aids in breastfeeding, helping to maintain suction while nursing.
The strength of the buccinator can influence the ability to whistle or play wind instruments.