Buccal branches of the facial nerve

Buccal branches of the facial nerve (highlighted in green)

The Buccal branches of the facial nerve are a group of nerves that originate from the facial nerve (cranial nerve VII) and supply the muscles of the face. They are primarily responsible for controlling facial expressions and are crucial for functions such as smiling, frowning, and blinking.

Anatomy

The buccal branches of the facial nerve typically arise from the facial nerve after it exits the stylomastoid foramen. They then course anteriorly and superiorly across the face, passing through the parotid gland before branching out to supply the muscles of the upper and lower lips, as well as the muscles of the cheek.

Function

The buccal branches of the facial nerve innervate several muscles of facial expression, including the buccinator, orbicularis oris, and parts of the orbicularis oculi. They are responsible for movements such as puckering of the lips, smiling, and blinking.

Clinical significance

Damage to the buccal branches of the facial nerve can result in facial paralysis, leading to an inability to control facial expressions. This can occur due to a variety of causes, including Bell's palsy, stroke, or trauma.

See also

• Facial nerve
• Facial muscles
• Facial paralysis

External links

• AnatomyExpert

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