A telephone rings and a girl responds by turning her head toward the noise. How did the girl's body know to respond?
a) motor neurons in the girl's brain interpreted the sound as a ringing telephone
b) interneurons in the girl's neck communicated with her muscle cells to turn her head
c) none of the other answer choices
d) sensory neurons in the girl's ears detected the stimuli of the telephone ringing
Ans: d) sensory neurons in the girl's ears detected the stimuli of the telephone ringing
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