Cardiovascular System Functions Overview
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Questions and Answers

What is the main function of the pulmonary circulation?

  • Site of gas exchange (correct)
  • Removes wastes
  • Adjusts blood supply in different physiological states
  • Delivers nutrients to tissues

Which cells in the cardiovascular system convert Angiotensin to Angiotensin II?

  • Endothelial cells (correct)
  • Red blood cells
  • Smooth muscle cells
  • Cardiomyocytes

Where does the pulmonary artery transport blood to?

  • Brain
  • Heart
  • Lungs (correct)
  • Kidney

How does the cardiovascular system adjust blood supply during the flight/fight response?

<p>Redirects blood from kidney and stomach to muscles and heart (C)</p> Signup and view all the answers

What percentage of cardiac output goes to coronary arteries?

<p>5% (C)</p> Signup and view all the answers

In systemic circulation, what is the main function of delivering nutrients to tissues supported by?

<p>Metabolism (C)</p> Signup and view all the answers

What is the main function of the atrioventricular valves in the heart?

<p>Prevent backflow of blood (D)</p> Signup and view all the answers

Which chamber of the heart pumps blood into the lungs?

<p>Right ventricle (A)</p> Signup and view all the answers

In cardiac tamponade, what restricts the pumping action of the heart?

<p>Pericardium inflammation (D)</p> Signup and view all the answers

What is the approximate weight of the heart as a percentage of total body weight in mammals?

<p>0.6% (C)</p> Signup and view all the answers

What is the function of semilunar valves in the heart?

<p>Prevent backflow of blood (A)</p> Signup and view all the answers

Which part of the heart has a mass approximately one-third that of the left ventricle?

<p>Right ventricle (C)</p> Signup and view all the answers

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