When a reflex arc consists of only two neurons in an animal (one sensory neuron, and one motor neuron), it is defined as monosynaptic. Monosynaptic refers to the presence of a single chemical synapse.he integration center is always within the central nervous system. 4) Motor Neuron: Conducts efferent impulses from the integration center to an efferent organ. 5) Effector: Muscle fiber or gland cell that responds to the efferent impulses (by contracting or secreting).
Short for light-emitting diode. An electronic semiconductor device that emits light when an electric current passes through it. LEDs are used for indicator lights, such as those on the front of a disk drive.
SMD LED stands for surface mount LED. Specifically, it's a light-emitting diode that is mounted onto and soldered onto a circuit board. An SMD LED is quite small since it has no leads or surrounding packaging that comes with a standard LED. This means it's best handled, not by a human, but by automated assembly equipment.