Question

In spite of the presence of complex neuron networks, reflex arcs continue to be more efficient for quick responses.

• A. True
• B. False

Answer 1

The correct option is A True

The process of response to a peripheral nervous stimulation that occurs involuntarily, that I without conscious effort or thought and requires the involvement of a part of the central nervous system, is called a reflex action. These actions are very rapid, automatic, stereotyped behaviour or responses in which same kind of stimulus evokes a short-lived response. The stimulus is detected by sensory receptors present in the skin. These initiate nerve impulses in the sensory or afferent neurons leading from them to the spinal cord. These impulses enter the spinal cord and initiate impulses in one or more interneurons. Interneurons initiate impulses in one or more motor or efferent neurons. The motor neurons then carry these impulses to the effectors or skeletal muscles in which response will be shown. This entire pathway from sensory receptor to sensory neuron to spinal cord (having interneurons) to motor neuron to effectors is called the reflex pathway or reflex arc.

So, the correct answer is 'True'.