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.
drg = dorsal root ganglion. dh = dorsal horn of spinal cord gray matter. vh = ventral horn of spinal cord gray matter. In the dorsal root ganglion at 100X and 400X the sensory neuron cell bodies ncb are visible as large cells stained light and medium purple. Glial cells called satellite cells sc surround the neurons. The satellite cells in this image are the small dark purple cells.