9. Breathing, blood pressure and heart rate are controlled by the ___. (A)limbic system (B) cerebral cortex (C) hypothalamus (D)medulla

14. By pairing the ringing of the bell with the presentation of meat, Pavlov trained dogs to salivate to the sound of a bell even when no meat was presented.In this experiment, the presentation of the meat was the _______. (A)unconditioned response (B) conditioned response (C) unconditioned stimulus (D)conditioned stimulus