MICROANATOMY

Detailed explanation-1: -The correct sequence of the components in a reflex arc is given below: Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle.

Detailed explanation-2: -Reflex arcs Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector.

Detailed explanation-3: -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-4: -The interneuron is the processing center to conduct an impulse from the sensory neuron to the motor neuron. Afferent neurons (motor neurons) may synapse with interneurons which connect with other parts of the CNS. Motor neurons conduct an impulse from the brain of spinal cord out to a synapse with an effector.

Detailed explanation-5: -A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.