Reference no: EM133630815

Question

1. Describe the organization of thin and thick filaments. What is each composed of and how are they arranged in the sarcomere.

2. Describe the contraction cycle. Begin with the muscle in a relaxed state, Include description of the function and organization of molecules involved in muscle contraction.

3. What events occur at the neuromuscular junction (NMJ) to initiate muscle contraction? Describe the organization of the NMJ and molecules involved in the process. You do not have to describe the contraction cycle.

4. Describe the action potential in a cardia muscle cell. Define the phases and what allows each phase to occur. Include mention of what is different about a cardiac muscle cell action potential compared to a skeletal muscle cell action potential.

5. How do cardiac autorhythmic cells allow the heart to contract? Where are these cells located. Be specific and describe what is meant by the term pacemaker potential.

6. List and describe the components of the hearts conducting system. Describe where an action potential is initiated and how it travels through the conducting system. Include mention of the overall function of the conducting system.

7. Describe the organization of a capillary bed and describe how blood flows when it is going through the capillary bed as opposed to when the capillaries are bypassed.

8. Define the term pulse pressure. Where is pulse pressure observed and why?

9. Describe how the kidneys and the cardiovascular system can help reduce blood pressure.