Biology of Humans 4th Edition by Judith Goodenough,Betty McGuire

Exercise 20

As you sit here studying, you are unlikely to be aware of the pressure of your clothes against your body and the rustling of paper as other students turn pages. The part of the brain that "decides" that these are unimportant stimuli is the
a. reticular activating system.
b. cerebellum.
c. hypothalamus.
d. medulla.