Scientific American: Psychology
Infographic Activity 2.2: Communication Between Neurons
Communication Between Neurons
Messages travel within a neuron using electrical currents. But communication between neurons depends on the movement of chemicals – neurotransmitters. Though they all work in the same way, there are many different types of neurotransmitters, each linked to unique effects on behavior. However, drugs and other substances, known as agonists and antagonists, can alter this process of communication between neurons by boosting or blocking normal neurotransmitter activity.
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1. Lesley has been lifting weights for many months, trying to build muscle so she can compete in bodybuilding competitions. She decides to take a natural, organic product that will help enhance the effectiveness of her workouts. If you were to think of her supplement as being similar to a chemical working on neurotransmitters, what kind of product would it be?
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2. When vesicles at the end of an axon are stimulated by an action potential, what do they normally do?
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3. There are many different kinds of neurotransmitters that can be found within a neuron (or between two neurons). Which of the following is the most accurate statement regarding the differences between them?
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4. Gretchen is watching an action movie on television that involves an archaeologist who quests after lost artifacts. In one scene this man is running through a jungle while being chased by local residents who use blow guns to fire darts at him. He does not know that these darts are tipped with _______, which is an acetylcholine antagonist that is very poisonous.
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5. What happens to neurotransmitters after they bind into receptor sites on the dendrite of a receiving neuron?
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6. Agonists are to ________ as antagonists are to ________.
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