Biol 216 5 The Neuron 31-60.pdf

Biol 216 5 The Neuron 31-60.pdf - Question What part of the...

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5/18/17 1 Question ? What part of the neuron receives signals and transmits them toward the cell body? A. Axon B. Axon hillock C. Axon terminals D. Dendrites * Not always: see slide 27-axosomatic synapse, axoaxonic synapse Question ? Glial cells are non-neuronal cells that providenutrition and supportto neurons. Which of the following are types of glial cells? A. Purkinjecells B. Schwann cells C. Oligodendricytes D. Astrocytes E. All but answer A
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5/18/17 2 Question ? Glial cells are non-neuronal cells that providenutrition and supportto neurons. Which of the following are types of glial cells? A. Purkinjecells B. Schwann cells C. Oligodendricytes D. Astrocytes E. All but answer A Found in brain and spinal cord. Cover the surfaces of blood vessels. For structural support Help maintain ion concentrations in the interstitial fluid surrounding them. Astrocytes: star shaped (orange)
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5/18/17 3 Question ? Myelin sheaths have a high lipid content and serve to insulate the electrical impulse as it travels along an axon. They are formed by: A. Nodes of Ranvier B. Schwanncells C. Oligodendrocytes D. Both A and B E. Both B and C Question ? Myelin sheaths have a high lipid content and serve to insulate the electrical impulse as it travels along an axon. They are formed by: A . Nodes of Ranvier B. Schwanncells C. Oligodendrocytes D. Both A and B E. Both B and C
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5/18/17 4 PNS: Schwann cells form myelin sheath CNS: oligodendrocytes form myelin sheath Question ? These gaps expose the axon membrane directly to extracellular fluid and speed the rate at which electrical impulses move along axons A. Gapjunctions B. Neuronal boutons C. Cytoplasmic fissures D. Nodes of Ranvier E. all of the above
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5/18/17 5 Question ?
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