Answer the following question given this paragraph: Figure 15.1 Fight or Flight? Though the threats that modern humans face are not large predators, the autonomic nervous system is adapted to this type of stimulus. The modern world presents stimuli that trigger the same response. (credit: Vernon Swanepoel). Q: The fight or flight response involves what system? A:

Select from the following.
(I) functional nervous system.
(II) cellular nervous system.
(III) voluntary nervous system.
(IV) autonomic nervous system.
Answer:
(IV)