In pumps. Flexible impeller of cooling system pump of an outboard engine. An impeller is a rotating component of a centrifugal pump, usually made of iron, steel, bronze, brass, aluminium or plastic, which transfers energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid outwards from the center of rotation.
noun, plural: dorsal root ganglia. (neuroanatomy) The ganglion on the dorsal root of every spinal nerve. It is where the cell bodies of sensory neurons are located; hence, it is chiefly involved in the transmission of sensory information.
Dorsal root ganglia or spinal ganglia where the cell bodies of sensory or afferent nerves are located; Autonomic ganglia, which contain the cell bodies of the autonomic nervous system. In this system, nerve fibers that run from the central nervous system to the ganglia are called the preganglionic fibers.