While walking barefoot along the beach, you step on a shard of glass and reflexively lift your injured foot. Which path did the reflex to lift your foot take?
A) Motor nerve → sensory nerve → spinal cord → brain
B) Sensory nerve → motor nerve → spinal cord → brain
C) Sensory nerve → spinal cord → brain → spinal cord → motor nerve → effector
D) Sensory nerve → spinal cord → motor nerve → effector
E) Motor nerve → spinal cord → brain → spinal cord → sensory nerve → effector

Question

Quizplus · Accepted Answer

The correct path for a reflex action, such as lifting your foot after stepping on glass, starts with the sensory nerve detecting the pain. The signal then travels to the spinal cord, where it is relayed to a motor nerve, which finally activates the muscles (effector) to lift the foot. This process bypasses the brain for a quick response.

While Walking Barefoot Along the Beach, You Step on a Shard