Question

Mario hears his brother open the door, so he turns toward the door to say hello. Which best describes the signals moving through Mario’s nervous system to make him react and turn around?


A)The sensory nervous system sends a signal to the central nervous system, then the brain sends a signal to the somatic nervous system.


B)The autonomic nervous system sends a signal to the central nervous system, then the brain sends a signal to the sensory nervous system.


C)The sensory nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the autonomic nervous system.


D)The autonomic nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the somatic nervous system.

Answer 1

The answer is A. The sensory nervous system sends a signal to the central nervous, then the brain sends a signal to the somatic nervous system.

Answer 2

Answer:

A)The sensory nervous system sends a signal to the central nervous system, then the brain sends a signal to the somatic nervous system.

Explanation:

Sensory nervous system senses the stimulus with help of receptors. Here, mechanoreceptors present in hair cells of inner ear sense the sound of opening the door. The information is sent to the brain, a part of central nervous system which then commands the somatic nervous system.

The somatic nervous system commands the skeletal muscles of Mario to make movement to turn around.