Chapter 48 Questions-1 - Ch 48 Multiple Choice Identify the...

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Ch 48 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 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 ____ 2. Which of the following is associated with the evolution of a central nervous system? ____ 3. An organism that lacks integration centers ____ 4. Where is the most likely location of a group of nerve cell bodies known as a ganglion? ____ 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 ____ 6. What do muscles, nerves, and glands have in common? ____ 7. Integration of simple responses to certain stimuli, such as the patellar reflex, is accomplished by which of the following?
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____ 8. The blood-brain barrier ____ 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. ____ 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 ____
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