While working on getting her 10,000 steps on her fitness monitor,Gina accidently steps on a piece of broken glass and injures her foot.What causes Gina to immediately lift her foot in response to the cut from the piece of broken glass?
A)Sensory neurons relay information directly to the spinal cord and motor neurons in the spinal cord send information to muscles in the foot.
B)Sensory neurons relay information directly to the brain and motor neurons in the brain send information to muscles in the foot.
C)Motor neurons relay information directly to the spinal cord and sensory neurons in the spinal cord send information to muscles in the foot.
D)Motor neurons relay information directly to the brain and sensory neurons in the brain send information to muscles in the foot.

Question

Quizplus · Accepted Answer

When Gina steps on the piece of broken glass, sensory neurons in her foot send signals to the spinal cord, which then sends signals to motor neurons that control the muscles in her foot, causing her to lift it quickly. This reflexive action happens via a spinal reflex arc, which allows for a faster response time than if the signal had to travel all the way to the brain before being processed. Therefore, Choice A is the correct answer.

While Working on Getting Her 10,000 Steps on Her Fitness