buccopharyngeal fascia buccopharyngeal fascia the buccopharyngeal fascia is a fascia of the pharynx. it represents the posterior portion of the pretracheal fascia. it covers the superior pharyngeal constrictor muscles, and buccinator. buccopharyngeal fasciacarotid sheath outlined in redmuscles of the pharynx and cheekdetailsidentifierslatinfascia buccopharyngeata98a04.1.04.010 a05.3.01.116ta22211fma55078anatomical terminology structure the buccopharyngeal fascia is a thin lamina given off from the pretracheal fascia. it is attached to the prevertebral fascia by loose connective tissue, with the retropharyngeal space found between them. it may also be attached to the alar fascia posteriorly at c3 and c6 levels. the buccopharyngeal fascia envelops the superior pharyngeal constrictor muscles. it closely invests the constrictor muscles of the pharynx. it is continued forward from the constrictor pharyngis superior over the pterygomandibular raphe to cover the buccinator. the thyroid gland wraps around the trachea and oesophagus anterior to the buccopharyngeal fascia, so that the lateral parts of the thyroid gland border it. the buccopharyngeal fascia runs parallel to the medial aspect of the carotid sheath. additional images floor of mouth. deep dissection.anterior view.