Avian Botulism (Limberneck Disease). Posted on August 21, 2014 - 3:36pm. Avian Botulism is a paralytic, often fatal disease of wild and domestic birds resulting from the ingestion of a toxin produced by the bacterium Clostridium. Environmental studies have found seven toxins produced by botulinum bacterium; two of which, Types C & E, commonly cause mortality.
Definition of pharynx for English Language Learners. medical : the part inside your mouth where the passages of the nose connect to your mouth and throat.
Pharynx is a vertical tube lying behind the nasal and oral cavity. Its walls are built from striated (voluntary) muscles, covered by mucosal layer on its inner side. The part of the pharynx lying behind the nasal cavity is called the nasopharynx (Lat. nasus = nose).