EVERYDAY SCIENCE

Detailed explanation-1: -So the reflex arc consists of these five steps in order-sensor, sensory neuron, control center, motor neuron, and muscle.

Detailed explanation-2: -Effectors include muscles or organs that respond to the information received by sensory receptors. Reflex arcs are called monosynaptic if sensory neurons transmit messages directly to motor neurons within the spinal cord.

Detailed explanation-3: -The last component is some target organ (effector organ) that causes the reflex response. This is usually a muscle, such as the skeletal muscle fibers of the quadriceps muscle of the leg, in the case of the “knee jerk” (muscle stretch) reflex, or the smooth muscle of the iris in the pupillary light reflex.

Detailed explanation-4: -Receptor in the skin detects a stimulus (the change in temperature). Sensory neurone sends electrical impulses to relay neurone, which are located in the spinal cord. They connect sensory neurones to motor neurones. Motor neurone sends electrical impulses to an effector.