48_TestBank_TB

48_TestBank_TB - Biology, 7e (Campbell) Chapter 48: Nervous...

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Biology, 7e (Campbell) Chapter 48: Nervous Systems Chapter Questions 1) Which of the following is (are) characteristic of a simple nervous system? A) a nerve net such as is found in cnidarians B) nerve cell ganglia C) having electrical impulses traveling in both directions D) both A and C E) A, B, and C Answer: D Topic: Concept 48.1 Skill: Knowledge 2) Which of the following is associated with the evolution of a central nervous system? A) a complete gut B) bilateral symmetry C) radial symmetry D) a closed circulatory system E) excitable membranes Answer: B Topic: Concept 48.1 Skill: Knowledge 3) An organism that lacks integration centers A) cannot receive stimuli. B) will not have a nervous system. C) will not be able to interpret stimuli. D) can be expected to lack myelinated neurons. E) both A and D Answer: C Topic: Concept 48.1 Skill: Comprehension 4) Where is the most likely location of a group of nerve cell bodies known as a ganglion? A) in the central nervous system B) in the peripheral nervous system C) anywhere in the nervous system D) within the brain E) within the spinal cord Answer: B Topic: Concept 48.1 Skill: Knowledge 1
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5) The general functions of the nervous system include which of the following? I. integration II. motor output III. sensory input A) I only B) II only C) III only D) I and II only E) I, II, and III Answer: E Topic: Concept 48.1 Skill: Comprehension 6) What do muscles, nerves, and glands have in common? A) They synapse with neurons. B) They are referred to as postsynaptic cells. C) They are target cells. D) A and B only E) A, B, and C Answer: E Topic: Concept 48.1 Skill: Comprehension 7) Integration of simple responses to certain stimuli, such as the patellar reflex, is accomplished by which of the following? A) spinal cord B) hypothalamus C) corpus callosum D) cerebellum E) medulla Answer: A Topic: Concept 48.1 Skill: Knowledge 8) The blood-brain barrier A) is formed by tight junctions. B) is formed by oligodendrocytes. C) tightly regulates the intracellular environment of the CNS. D) uses chemical signals to communicate with the spinal cord. E) provides support to the brain tissue. Answer: A Topic: Concept 48.1 Skill: Comprehension 9) Which of the following statements is false ? A) All cells have a membrane potential. B) Gray matter is the site of neuronal integration. C) Astrocytes can communicate with nerve cells. D) The outside of a cell is negative with respect to the inside of a cell. E) Squid axons are a model system for nerve conductance. Answer: D Topic: Concept 48.2 Skill: Comprehension 2
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10) If the concentration of potassium in the cytoplasm of a nerve cell with a resting membrane potential of -70 mV were elevated above normal, the new resting potential would A) still be -70 mV. B) be -69 mV or higher.
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48_TestBank_TB - Biology, 7e (Campbell) Chapter 48: Nervous...

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