Central sulcus of the human brain. Gray's FIG. 726â Lateral surface of left cerebral hemisphere, viewed from the side. The central sulcus is a fold in the cerebral cortex of brains in vertebrates. Also called the central fissure, it was originally called the fissure of Rolando or the Rolandic fissure.
One of the most common duck diseases is Duck Virus Hepatitis. It is a fatal disease that usually attacks ducklings that are about 1 to 28 days old. The reason why they are easily attacked by this disease is their vulnerability.ne of the most troublesome duck diseases is fowl cholera. This disease is caused by a bacterium called Pasteurella multocida and is often associated with poor sanitation. The symptoms include diarrhea, mucous discharges and loss of appetite.
Bacterial diseases are diseases that are caused either internally or externally by bacteria. These diseases are common among aquarium fish predisposition to them include factors such as poor water quality conditions, stressful living conditions, hypoxia (when a whole body or part of a body is denied a proper supply of oxygen, temperature changes, and the handling and transport of fish.