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practice_exam_1 - Physiology 2130 Questions from Minitest I...

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Physiology 2130 Questions from Minitest I October 2009
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1. Which of the following statements best describes the differ\iential ion concentraions found across a typical cell membrane? A. Na+ and K+ concentrations are higher inside the cell , and Cl- concentrations are higher outside the cell. B. K+ concentrations are higher outsides the cell, and Na+ and Cl- concentractions are higher inside the cell. C. K+ and Cl- concentrations are higher outside the cell, and Na+ concentrations are higher inside the cell. D. Na+ and Cl- concentrations are higher outside the cell, and K+ concentrations are higher inside the cell. E. Na+ concentrations are higher outside the cell, K+ concentrations are higher inside the cell, and Cl- concentrations are equal inside and outside the cell. 2. Which body compartment holds the largest amount of totally body water? A. Interstitial fluid. B. Extracellular fluid. C. Intracellular Fluid. D. Plasma. E. Central Nervous System. 3. Which of the following statements regarding how quickly hydrophobic molecules diffuse through a cell membrane is/are TRUE? A. Larger concentration gradients promote faster diffusion. B. Smaller molecules diffuse faster. C. Diffusion occurs faster over a larger surface area. D. Diffusion occurs faster at higher temperatures. E. All of the above statements are correct. 4. Which of the following solutions has the highest osmolarity? A. Pure water. B. 100 mM CaCl2 C. 100 mM Glucose D. 50 mM NaCl + 50 mM KCl E. 50 mM Glucose + 50 mM NaCl 5. Approximately how long does the typical action potential last? (recall “ms” = millisecond). A. 0.03 ms B. 0.3 ms C. 3 ms D. 30 ms
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E.300 ms 6. Nodes of Ranvier are found on what part of a neuron? A. Synapse B. Dendrite C. Soma D. Oligodendrocytes E. Axon 7. Which of the following is NOT a type of synapse found within the CNS. A. Axo-dendritic B. Axo-somatic C. Axo-axonic D. Dendro-dendritic E. All of the above synapses are found within the CNS. 8. The perception of sound is best affiliated with which brain area? A.
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practice_exam_1 - Physiology 2130 Questions from Minitest I...

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