散さん在ざい神しん経けい系けい

noun

diffuse nervous system

A biological term for a nervous system where nerve cells are spread throughout the body rather than concentrated in a central structure. Contrasts with 集中神経系 (centralized nervous system).

See also: 集中神経系

• ヒドラは散さん在ざい神しん経けい系けいを持もつ生せい物ぶつの一いち例れいだ。

  Hydra is an example of an organism with a diffuse nervous system.