The small masses of nervous tissues in which many neurones have their nuclei are called
Answer Details
The small masses of nervous tissues in which many neurons have their nuclei are called ganglia. Ganglia are clusters of nerve cell bodies located outside the central nervous system (brain and spinal cord). They are composed of a number of neurons, usually between a few and several thousand, that are responsible for relaying signals to and from different parts of the body. Ganglia are found in both the peripheral nervous system and the enteric nervous system, which controls the digestive system.