Chapter 13 Nervous Tissue

Chapter 13 Nervous Tissue - Chapter 13 Nervous Tissue...

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Chapter 13 Nervous Tissue Student: ___________________________________________________________________________ 1. Nissl bodies are located in the _____ of a neuron. A. soma B. dendrite C. myelin sheath D. telodendria E. synaptic knobs 2. The trigger zone of a neuron includes A. the dendrites. B. the synaptic knobs. C. each node of Ranvier. D. each internode. E. the axon hillock. 3. In a ____ neuronal circuit, input to one neuron leads to output from multiple neurons. A. reverberating B. facilitated C. diverging D. converging E. parallel after-discharge circuit 4. Because of an absence of _____, damaged nerve fibers in the CNS cannot regenerate. A. a myelin sheath B. an epineurium C. an endoneurium D. neuroglia E. an axolemma 5. A unipolar neuron with a soma in a ganglion just outside the spinal cord is functionally a(n) A. somatic motor neuron. B. visceral motor neuron. C. interneuron. D. sensory neuron. E. synaptic neuron.
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6. Because of ___, one motor neuron in the brain can ultimately cause thousands of muscle fibers to contract. A. diverging circuits B. converging circuits C. parallel after-discharge circuits D. recruitment E. long-term potentiation 7. What is NOT a feature of neurons? A. Nissl bodies B. contractility C. conductivity D. secretion E. excitability 8. Nerve signals A. travel fastest in small unmyelinated fibers. B. travel fastest in large unmyelinated fibers. C. travel fastest in small myelinated fibers. D. travel fastest in large myelinated fibers. E. travel at the same speed in all nerve fibers. 9. Myelin consists mainly of A. phospholipid. B. carbohydrate. C. protein. D. lipofuscin. E. cholesterol. 10. One role of the astrocytes is to A. circulate the cerebrospinal fluid. B. produce cerebrospinal fluid. C. phagocytize tissue debris. D. help form the blood-brain barrier. E. form myelin in the CNS.
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A. Schwann cells B. satellite cells C. astrocytes D. oligodendrocytes E. ependymal cells 12. Which of the following is an effector? A. an afferent neuron B. an efferent neuron C. a gland D. a sense organ E. an interneuron 13. The integrative function of the nervous system is associated especially with A. the sensory neurons. B. the afferent neurons. C. the interneurons. D. the efferent neurons. E. the effectors. 14. Which of the following is NOT true? A. Interneurons are only found in the CNS. B. The CNS consists of the brain, cranial nerves, and spinal cord. C. The visceral motor division is further divided into sympathetic and parasympathetic divisions. D. Oligodendrocytes are found only in the CNS. E. Satellite cells are found only in the PNS. 15. The brain and spinal cord constitute the _____ nervous system. A. autonomic
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Chapter 13 Nervous Tissue - Chapter 13 Nervous Tissue...

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