|composed of two or more different organs that work together to provide a common function|
|self-regulatory biological system in which the output affects the input either positivelynegatively|
effector ef·fec·tor (ĭ-fěk'tər)
A muscle, a gland, or an organ capable of responding to a stimulus, especially a nerve impulse.
A nerve ending that carries impulses to a muscle, a gland, or an organ and activates muscle contraction or glandular secretion.