Chapter 11 Cardiovascular system 1 Case Scenario An athlete on compl...

Chapter 11 Cardiovascular system Â Â 1. Case Scenario An athlete on completeion of 400 mts relay run...

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Medical Sciences

Chapter 11 Cardiovascular system Â Â
1. Case Scenario An athlete on completeion of 400 mts relayrun experiences a very rapid heart beat and then after sometimesexperiences normal heat beat.

a.Which system is responsible for increaing the heartrate?

b.Which system is responsible for decreasing is heartrate?
2. Describe how the valves keep the blood moving in onedirection? Â Â

3. Why is the pressure in the pulmonary circulation lower thanin the systemic circulation? Â Â
4. Watch this video to explore capillaries and how theyfunction in the body. Capillaries are never more than 100micrometers away.

a. Describe the structure of the capillary walls.

b. What is the main component of interstitial fluid?

c. What is microcirculation? Name the two types of capillaryvessels and name the actual exchange vessels

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4.2 Ratings (724 Votes)

1 a sympathetic nervous system is responsible for increasing heart ratethis system releases hormones catecholaminesepinephrine and norepinephrine to accelerate the heart rate b parasympathetic nervous system is responsible for decreasing heart ratethis system release acetylcholine to slow the heart rate 2 the heart valves prevent backflow of See Answer

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