Hormones can travel through the blood and not affect all tissues; only cells possessing sites for that particular hormone are affected, and these cells are called cells.

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.