PHSI2601 Neurophysiology Practice Questions PDF

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Download PHSI2601 Neurophysiology Practice Questions PDF

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Neurophysiology Study Questions

1. Describe the characteristic arrangement of the soma, axon, dendrites and axon terminal of a somatic neuron and explain the roles that these structures play in the function of a neuron 2. Draw a diagram illustrating the general structure of the plasma membrane 3. Label phospholipids, intrinsic (transmembrane) proteins and extrinsic proteins and polysaccharides. Include in this drawing an ion channel 4. Explain how hydrophobic and hydrophilic forces lead to the formation of the lipid bilayer. What is on either side of the lipid bilayer and how do the interactions stabilise the bilayer? 5. The lipid bilayer is a selectively permeable membrane. What kind of substances can permeate the lipid bilayer and why? 6. Explain what is meant by the term diffusion. What will happen to the molecules of glucose in a concentrated glucose solution that is placed in the bottom of a beaker and covered with a layer of pure water? What is meant by equilibration of two solutions, and when will it be complete? 7. If two solutions of differing concentrations are separated by a selectively permeable membrane, what are the factors that determine the rate of net movement of the solute from one side to the other? 8. Explain the difference between simple diffusion, facilitated diffusion, primary active transport and secondary active transport of substances. Give an example of each. 9. What is meant by the term osmosis? Why is osmosis an issue for cells? 10. On which side of the neuron membrane are the following ions normally found to be concentrated: K+, Na+, Cl- and Ca2+. What will be the direction of the chemical driving force for each of them and why?...