Where is the buccinator muscle?
cheek
The buccinator muscle is the major facial muscle underlying the cheek. It holds the cheek to the teeth and assists with chewing. The buccinator muscle is served by the buccal branch of cranial nerve VII, also known as the facial nerve.
Is buccinator deep or superficial?
It is a potential space in the cheek, and is paired on each side. The buccal space is superficial to the buccinator muscle and deep to the platysma muscle and the skin. The buccal space is part of the subcutaneous space, which is continuous from head to toe.
What does the buccinator attach to?
The posterior border of the buccinator is pierced by the tensor veli palatini near its attachment point to the pterygomandibular raphe. Superior and inferior parts of the muscle lie deep to the zygomaticus major, risorius, levator and depressor anguli oris muscles.
Where is the buccal mass?
A mass appearing within the substance of the cheek is unusual and suggests a tumor of the buccal space or the accessory lobe of the parotid gland. The buccal space, first described by Kostrubala in 1945, is a potential space between the buccinator muscle and the more superficial muscles of facial expression ( Fig.
Is the buccinator involved in smiling?
That helps raise the upper lip and pull it back slightly. This movement exposes the teeth and helps you create expressions of contempt and disdain. However, when the levator anguli oris works together with other muscles, it helps you form a smile.
Is buccinator a muscle of facial expression?
The facial muscles involved in chewing are: Buccinator, a thin muscle in your cheek that holds each cheek toward your teeth.
What is the origin and insertion of the buccinator?
ORIGIN. External alveolar margins of maxilla and mandible by molar teeth, to maxillary tubercle and pterygoid hamulus and posterior mylohyoid line respectively, then via pterygomandibular raphe between bones. INSERTION. Decussates at modiolus of mouth and interdigitates with opposite side.
What cranial nerve Innervates the buccinator?
The Trigeminal Nerve The buccal nerve pierces the skin on the face behind the ramus of the mandible, passes in front of the masseter, and innervates the skin anteriorly of the buccinator muscle.
What is buccal mass?
Definition of buccal mass : the mouthparts in mollusks other than bivalves and the muscles by which they are operated and with which they generally form a more or less compact mass.
Where is the buccal cheek?
The buccal mucosa is the lining of the cheeks and the back of the lips, inside the mouth where they touch the teeth.
Is the buccinator a muscle of facial expression?
The facial muscles involved in chewing are: Buccinator, a thin muscle in your cheek that holds each cheek toward your teeth. Lateral pterygoid, a fan-shaped muscle that helps your jaw open.
What nerve Innervates the buccinator muscle?
What is the buccinator muscle innervated by?
The buccinator muscle receives blood supply from branches of the internal maxillary artery and facial artery. Blood from this muscle is collected by the pterygoid plexus and internal maxillary vein. The muscle is innervated by the trigeminal nerve (or Cranial Nerve V) and facial nerve (or Cranial Nerve VII).
Is buccinator a muscle of mastication?
The buccinator muscle forms the lateral wall of the oral cavity. It is presumed to aid mastication by maintaining bolus position. Such a function would involve thickening the cheek, possibly compressing the alveolar bone and contributing to malocclusions.
Can you have a tumor in your cheek?
Inner cheek cancer (also called buccal mucosa cancer) is a type of head and neck cancer that begins when the cells that make up the inner cheek grow out of control and form lesions or tumors. Buccal mucosa is another name for the inside lining of the cheeks.
What happens if the buccinator muscle is damaged?
Damage to the facial nerve can lead to paralysis of the buccinator muscles, which can lead to difficult mastication as the non-functioning of this muscle can cause repeated laceration of the cheek mucosa.