Question

Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.

Interneurons relay the impulse to motor neurons in the spinal cord.
She immediately moves her foot.
The sensory neuron generates an impulse.
Receptors in her toe receive stimuli.
Motor neurons signal the leg muscles.

Answer 1

Interneurons relay the impulse to motor neurons in the spinal cord.  

She immediately moves her foot.  

The sensory neuron generates an impulse.  

Receptors in her toe receive stimuli.  

Motor neurons signal the leg muscles.

Answer 2

Chronological order in which nervous system works:

The correct chronological orders of the event occurring in the situation when nail pricked in the barefoot of Lucia in her yard are as follows:

• "Receptors in her toe receive stimuli".  
• "The sensory neuron generates an impulse".  
• "Interneurons relay impulse to motor neurons in spinal cord".  
• "Motor neurons sends signal to leg muscles".
• "She immediately moves her foot".

The above given is the correct chronological arrangement of events which makes Lucia to remove her leg from the nail as it pricks her.