cardiovascular physiology questions
cardiovascular physiology questions
- The following questions need to be answered. I don’t have a work limit that is needed. I just need the questions to be answered accurately. I would estimate it could take 4 pages.
- Describe the changes in membrane structure and ion flux which are responsible for each phase of the slow response action potential.
- Describe the effect of calcium channel blockers (verapamil and nifedipine) on the slow response action potential.
- Describe the mechanism of action potential propagation in cardiac muscle fibers including the role of the intercalated disc in the process.
- Define the terms: automoticty, rhythmicity, and pacemaker.
- Describe the origin, structure and function of the S. A. node.
- Describe the ionic basis of automoticity.
- Describe the conduction of the cardiac excitation impulse through the atria and explain why it does not pass directly into the ventricles.
- Describe the structure and function of each of the following parts of the A. V. node: AN region, N region, NH region.
- Describe the ventricle conducting system and explain the sequence of cardiac excitation and contraction.
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