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Exam+2+--+Spring+2004+_Practice_+--+Blank - Bio 225 Spring...

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Bio 225 Spring Term 2004 Practice Exam II 1. Name the characteristics of neuron structure and function that play crucial role in unidirectional and rapid transmission of electrical signal (action potential). 2. Describe the unique characteristics of Action Potential (4 things). 3. Match the function with correct structure. a. Dendrite 1. Initiation of AP b. axon 2. Reception of information c. axon hillock 3. intracellular trafficking d. internode 4. chemical propagation of AP e. synapse 5. facilitates saltatory propagation of AP f. cytoskeleton (microtubules) 6. Electrical propagation of AP 4. Dendrite spines a. Are the site of signal reception b. Release neurotransmitters c. Are the site of transcription for protein synthesis d. A and C e. None of the above 5. An action potential that travels down the length of axon originates in the 6. The blood brain barrier is formed by a. Astrocytes b. Oligodendrocytes 7. myelin sheath of the central nervous system (CNS) is formed by
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8. Based on the knowledge gained in lectures, describe what physiological function will be affected by deficiency of each of the following in our diet. 9. Which of the following ions are not crucial for smooth muscle contraction? a. Na+, K+, Ca2+ b. Ca2+, Cl-, K+ c. Na+, K+, Cl- d. All of the above
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