Head and Neck
Buccinator muscle is pierced by all except (AIIMS –Nov’2008)
|A||Buccal branch of Facial nerve|
|B||Mucus gland of buccopharyngeal fascia|
|D||Buccal branch of Mandibular nerve|
1. Buccal branch of Facial nerve (a) supplies Buccinator but doesn’t pierce it.
2. Buccal branch of Mandibular nerve (d) does pierce the buccinator muscle ans supplies proprioceptive fibres to it.
3. Buccal branch of Mandibular nerve passes between the two heads of lateral pterygoid and runs downwards and forwards to supply the skin and mucous membrane related to buccinator.
4. Molar mucous glands of buccopharyngeal fascia (b) pierce the buccinator muscle to reach the oral cavity.
5. Parotid duct (c) runs to the anterior border of masseter, winds round it and pierces the buccinator muscle, to enter the oral cavity. It opens into the oral vestibule opposite the upper second molar tooth.