<prompt> Tonsillar fossa is bounded anteriorly byPharyngobasilar fasciaPalatopharyngeal foldBuccopharyngeal fasciaPalatoglossal fold  <response>: 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 