This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
Tonsillar fossa is bounded anteriorly by 
Select and explain. 
A. Pharyngobasilar fascia, B. Palatopharyngeal fold, C. Buccopharyngeal fascia, D. Palatoglossal fold
D: Palatoglossal fold
Answer: D: Palatoglossal fold 
Explanation: Tonsilar fossa is bounded by Anterior - Palatoglossal fold containing palatoglossal muscle Posterior - Palatopharyngeal fold containing palato pharyngeal muscle Apex - Soft palate, where both arches meet Base - Dorsal surface of posterior one-third of tongue. (Ref: Anatomy of head, neck and brain. Vishram Singh. P 227 )