Chapter 2 Post Test

Chapter 2 Post Test - Chapter2PostTest 02:36 1 The Nervous...

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Chapter 2 Post Test 02:36 1. The Nervous system is an extensive network of ________ that caries information to and from all parts of the body. a. Specialized cells b. Ventricles c. Brain tissue d. impulses 2. The cell that sends and receives messages in the nervous system is called a/an a. Soma b. Dendrite c. Axon d. neuron 3. The majority of the brain is composed of a. Neurons b. Somas c. Glial cells d. myelin 4. When neurons fire and transmit messages, they a. Sometimes only partially transmit information, depending on signal strength b. Do so in an all-or-none fashion c. Begin rapidly, then slow down gradually d. Begin slowly then gradually increase in velocity
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5. Chemical substances that can block or reduce a cell’s response to the action of other chemicals or neurotransmitters are called a. Endorphins b. Digoxins c. Agonists d. Antagonists 6. What is a biological reason why heroin is addictive? a. Bodies of heroin users do not produce endorphins, so withdrawal is very painful b. Neurotransmitters are damaged, and continue sending stimulating messages to cells c. It produces an excess of dopamine in the brain d. Heroin bonds with serotonin, producing mental confusion in users. 7.
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Chapter 2 Post Test - Chapter2PostTest 02:36 1 The Nervous...

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