MEDICAL PHYSIOLOGY

Detailed explanation-1: -The reflex arc is a special type of neural circuit that begins with a sensory neuron at a receptor (e.g., a pain receptor in the fingertip) and ends with a motor neuron at an effector (e.g., a skeletal muscle).

Detailed explanation-2: -An effector organ is one that acts in response to the stimulus. In the case of the reflex arc, the effector organ is almost always a muscle fibre or a group of muscle fibres. It is innervated by a motor neuron carrying information about the response. In most cases, three neurons are involved in a reflex arc.

Detailed explanation-3: -effector: This is the muscle or gland that’s carrying out the response of the reflex. In our example, the effector would be the skeletal muscle that contracts to pull the body part away from the hot stimulus.

Detailed explanation-4: -For example, a simple reflex arc happens if we accidentally touch something hot. Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS.