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Electophysiology of Muscle & Nerve and Muscle
Written by Justin Cutler   
Thursday, 05 October 2006
I am creating these questions straight out of the note packet.
  1. How many Na+ are exchanged for K+ with the Na+/K+ ATPase pump and in what direction?

  2. Equilibrium potential of cell membranes can be calculated with what equation?

  3. In what direction is the Na+ concentration and electrical gradient?

  4. What pump is necessary to maintain the difference in Na+ and K+ across a membrane?

  5. The upstroke phase of an action potential is due to what?

  6. Name several ways of how you could increase the velocity of an action potential?

  7. What is the purpose of Myelin?

  8. What cells form myelin in the peripheral nervous system?********

  9. What cells form myelin in the central nervous system?********

  10. What are the "bare" areas between myelinated section of nerve called?

  11. What channels are present in these "bare" areas?

  12. What is Multiple sclerosis?


  1. Name some areas of the body where smooth muscle is found.

  2. Dense bodies in smooth muscle are analogous to what in striated muscle?

  3. What are caveolae?

  4. What blocks myosin binding on actin during relaxation of muscle?

  5. What is the ratio of Actin to Myosin?

  6. What forms the framework for myofilaments in vasculature?

  7. What phosphoralates myosin to activate it?

  8. What complex activates myosin light chain kinases?

  9. What structure allows smooth muscle cells to contract together?

  10. How is the contraction of smooth muscle different than that of Striated muscle?

  11. What can stimulate smooth muscle to contract?

  12. What two types of contraction can smooth muscle do?


  1. What is the smallest unit of skeletal muscle called?

  2. What is the reticulum that surrounds that smallest unit called?

  3. Multiple muscle fibers form a what?

  4. What is the connective tissue enveloping multiple muscle fibers together called?

  5. Fasicles are grouped together and surrounded by a connective tissue sheath called what?

  6. Nuclei that are very close to the sarcolemma, but on the outside belong to what type of cell?

  7. Satellite cells are precursors to what kind of cell?

  8. What is the difference in the placement of the nuclei in the cells of skeletal muscle vs. cardiac muscle?

  9. What is the basic unit of cross striated muscle myofibril called? (it runs from Z-line to Z-line)

  10. What is in the I-band?

  11. What is in the A-band?

  12. During contraction of skeletal muscle, what band width remains constant?

  13. What are the 3 subunits of Troponin called and what are each of their functions?

  14. Muscular Dystophy follows what type of genetic inheritance pattern?

  15. Muscular Dystophy is a mutation of what?

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