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.
The pharynx is a fibromuscular cavity that is situated within the throat and is located posterior or at the back of the nasal and the oral cavities. This structure is also found posterior to the larynx. Although the pharynx varies in size depending on the body structure of every individual, this cavity is approximately 5 inches long. It is also divided into three significant regions namely the nasopharynx, the oropharynx and the laryngopharynx or the hypopharynx.