Sentence Examples


  • A buccal cavity, a pharynx, an oesophagus and an intestine are always distinguishable.
  • A so-called heart lies on the dorsal surface of the oesophagus; it is closed behind, but in front it opens into a circumoesophageal ring, which gives off vessels into the lophophore and tentacles.
  • Pharynx and oesophagus are concealed in the head.
  • The cavities of the hollow tentacles open into a circular canal which surrounds the oesophagus at the base of the lophophore.
  • This may be associated with mud-eating habits; but it is not wholly certain that this is the case; for in Chaetogaster and Agriodrilus, which are predaceous worms, there is no protrusible pharynx, though in the latter the oesophagus is thickened through its extent with muscular fibres.
 

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