Nervous System

Nervous System - Guided Reading - The Nervous System:...

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Guided Reading - The Nervous System: Neurons and Synapses I 1. Benzodiazepines act by increasing ________ activity. A. GABA B. glutamate C. ACh D. enkephalin 2. Muscarinic Ach receptors are found in all of the following locations EXCEPT A. skeletal muscle B. smooth muscle C. cardiac muscle D. glands 3. Cells supporting neuron cell bodies in ganglia are termed A. astrocytes. B. ependymal cells. C. satellite cells. D. Schwann cells. 4. Sensory neurons for muscle position are the fastest conducting neurons. True False 5. Parkinson's disease is associated with the loss of dopaminergic neurons. True False 6. Which of the following is NOT a type of glutamate receptor? A. NMDA receptor B. muscarinic receptor C. kainate receptor D. All of the choices are correct. 7. Both long-term potentiation and long-term depression requires release of ___ from the postsynaptic neuron membrane. A. Cl - B. K + C. Ca 2+ D. Mg 2+ 8. Which of the following is true of axons? A. contain receptive areas B. very thin and short C. originates at the axon hillock on the cell body D. transmits graded electrochemical impulses
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9. Botulism toxin prevents release of Ach, causing A. flaccid paralysis. B. hemiplegia. C. spastic paralysis. D. None of the choices are correct. 10. Conduction without decrement means that action potentials transmitted down an axon will not decrease in amplitude. True False 11. The greater the number of depolarization regions on an axon, the faster the action potential will be conducted. True False 12. Which of the following is NOT a function of astrocytes? A. can take up NT from a synapse B. can stimulate or inhibit neurons C. needed to form synapses in the CNS D. phagocytose foreign material in the CNS E. forms the blood-brain barrier 13. Excitatory postsynaptic potentials are produced by A. glycine. B. glutamic acid. C. gamma-aminobutyric acid. D. benzodiazepines. 14. The varied strength of synaptic transmission is called A. spatial summation. B. temporal summation. C. synaptic plasticity. D. EPSP. 15. Glial cells normally lose their mitotic ability prior to birth. True False 16. Serotonin is derived from the amino acid tryptophan and is an important neurotransmitter. True False 17. The myelin sheaths of PNS neurons are produced by A. Schwann cells. B. oligodendrocytes. C. ependymal cells. D. leukocytes. 18. Synaptic plasticity involves structural changes in neurons such as A. formation of axillary branches B. formation of dendritic spines C. formation of more axon terminals D. mitosis of neurons
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19. The most numerous of all cells of CNS nervous tissue are the A. astrocytes. B. neurons. C. Schwann cells. D. microglia 20. The nigrostriatal dopamine system is located in part of the midbrain known as the substantia nigra and is degenerated in the disease myasthenia gravis. True False
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This note was uploaded on 03/20/2012 for the course MCB 32 taught by Professor Smiley during the Fall '11 term at Cal Poly.

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Nervous System - Guided Reading - The Nervous System:...

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