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Harley was participating in an experiment in which she was given a pill that was supposed to cause her to get drowsy. Five minutes after taking the pill, Harley reported that she felt drowsy and wanted to lie down. The pill was actually made of sugar and had no ingredients to cause drowsiness. How do you explain Harley’s drowsy feeling?

A variable that the experimenter manipulates is called a(n) __________.

__________ has been dubbed the “love hormone” because of its role in bonding and affection between people.

The subdivision of the peripheral nervous system that consists of nerves that control all of the involuntary muscles, organs, and glands is called the __________ nervous system.

Nina has decided to undergo surgery to treat her severe epilepsy. Consequently, her doctors will use a surgical procedure in which they will sever her __________.

Involuntary muscles are controlled by the __________ nervous system.

Which of the following are responsible for acting as a facilitator of communication between neurons?

__________ is an experiment in which participants do not know if they are in the experimental or the control group, but the experimenters do know which participants are part of which group.

The part of the autonomic nervous system that is responsible for reacting to stressful events and bodily arousal is called the __________ nervous system.

Eli is studying alone in his room late at night when he hears a loud noise downstairs. His heartbeat increases significantly and his breathing becomes shallow. He wonders if a burglar has entered the house and decides to investigate. When he gets downstairs, he discovers his cat has knocked over a plant stand. His body begins to relax and return to normal. Which part of his nervous system was responsible for putting Eli’s body on “high alert” when he did not know the source of the sound?