mc chapter 48 test

mc chapter 48 test - SCORE NAME: _ DATE:_ MULTIPLE CHOICE....

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SCORE NAME: ____________________ DATE:_____________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) An organism that lacks integration centers A) will not be able to interpret stimuli. B) can be expected to lack myelinated neurons. C) will not have a nervous system. D) cannot receive stimuli. E) Both A and D are correct. 2) What do muscles, nerves, and glands have in common? A) They are target cells. B) They are referred to as postsynaptic cells. C) They synapse with neurons. D) A and B E) A, B, and C 3) Integration of simple responses to certain stimuli, such as the patellar reflex, is accomplished by which of the following? A) spinal cord B) medulla C) hypothalamus D) cerebellum E) corpus callosum 4) 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 5) A ganglion is a group of nerve cell bodies A) within the brain. B) in the central nervous system. C) within the spinal cord. D) in the peripheral nervous system. E) anywhere in the nervous system.
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6) The blood-brain barrier A) provides support to the brain tissue. B) is formed by tight junctions. C) is formed by oligodendrocytes. D) uses chemical signals to communicate with the spinal cord. E) tightly regulates the intracellular environment of the CNS. 7) A squirrel chewing the insulation off an electrical wire is analogous to A) the depolarization of the unmyelinated axons. B) the nodes of Ranvier in the PNS. C) Schwann cells failing to myelinate axons of the CNA. D) the deterioration of the brain-blood barrier. E) demyelination of the nervous system. 8) Which of the following statements is false ? A) Squid axons are a model system for nerve conductance. B) The outside of a cell is negative with respect to the inside of a cell. C) Gray matter is the site of neuronal integration. D) Astrocytes can communicate with nerve cells. E) All cells have a membrane potential. 9) 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) be 0 mV. B) still be -70 mV. C) reverse polarity. D) be -69 mV or higher. E) be -71 mV or lower. 10) Neurons at rest are not at the equilibrium potential for K + because the cell membrane is A) only permeable to Na + . B) slightly permeable to Na + . C) only permeable to K + . D) not permeable to K + . E) not permeable to Na + . 11) If an otherwise normal nerve cell were made permeable to large negative ions, what would happen? A) The membrane potential would become positive. B) The Na+/K+ pump would not function.
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mc chapter 48 test - SCORE NAME: _ DATE:_ MULTIPLE CHOICE....

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