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.
The Ganglia of the Spinal Nerves-The Dorsal Root Ganglia. Each of the spinal nerves is equipped with a spinal ganglion, commonly called a dorsal root ganglion. The dorsal root ganglion is a swelling found along the dorsal root of the nerve.The dorsal root is one of two nerve roots associated with each spinal nerve.hrough the dorsal root, pseudounipolar sensory axons continue, exclusively, from the nerve, to the spinal cord, entering the spinal cord along the cord's dorsolateral surface. The dorsal root ganglion contains the cell bodies of these pseudounipolar sensory neurons.