Which best describes the protective action of blinking?
A) An interneuron detects motion and sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink.
B) A sensory receptor detects motion, a sensory neuron sends this information to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink.
C) A cell body detects motion, a sensory neuron sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink.
D) A cell body detects motion, a sensory neuron sends this message to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink.

Question

Quizplus · Accepted Answer

Blinking is a reflexive action that involves the sensory receptors in the eyes detecting sudden changes in light or motion, which is then transmitted via sensory neurons to the spinal cord. The information is then processed in the CNS, which sends a message back through motor neurons in the PNS to trigger the blink reflex. Therefore, option B best describes the protective action of blinking.

Which Best Describes the Protective Action of Blinking