The muscles in Acanthias, marked Csv 2 and Csβ 2 by Vetter, are here regarded as the first and second ventral constrictors respectively. The deeper ventral longitudinal muscles of Raia are described ...

d: Fiber grouping (adenosine triphosphatase, 200). Involvement of the pharyngeal muscles in Lambert-Eaton syndrome has been described, but it is not common. Only 7% of patients develop dysphagia.