blood and circulation
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Questions and Answers

What is the main function of the cardiovascular system?

  • To remove metabolic waste products from the body
  • To regulate blood pressure
  • To transport oxygen to tissues throughout the body (correct)
  • To produce blood cells

What is the term for the relaxation phase of the heartbeat?

  • Cardiac cycle
  • Heart rate
  • Diastole (correct)
  • Systole

What is the name of the layer of tissue that enables exchange of oxygen and nutrients between the blood and tissues?

  • Endothelial tissue (correct)
  • Myocardium
  • Pericardium
  • Endocardium

What type of blood vessels have valves to prevent backflow?

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

What is the purpose of the Rh factor in blood?

<p>To identify blood compatibility (C)</p> Signup and view all the answers

What is the name of the diagnostic procedure that uses sound waves to measure blood flow?

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

What is the name of the major blood vessel that carries oxygenated blood from the heart to the rest of the body?

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

What is the term for the contraction phase of the heartbeat?

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

What is the name of the layer of tissue that surrounds the heart?

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

What type of blood vessels are strong and elastic, and carry blood away from the heart?

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

What is the primary function of erythrocytes?

<p>To transport oxygen (D)</p> Signup and view all the answers

What is the process called when old red blood cells are destroyed?

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

What percentage of blood is composed of cells?

<p>Two thirds (B)</p> Signup and view all the answers

What is the main function of basophil white blood cells?

<p>To aid in allergic responses (A)</p> Signup and view all the answers

What is the purpose of the clotting process?

<p>To conserve the body's supply of blood (A)</p> Signup and view all the answers

Which type of white blood cell is most common?

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

What is the function of platelets in blood?

<p>To initiate clotting (C)</p> Signup and view all the answers

What is the name of the protein found in red blood cells that carries oxygen?

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

Where do erythrocytes originate?

<p>Bone marrow (B)</p> Signup and view all the answers

What is the term for the fluid part of blood?

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

What is the main function of neutrophil white blood cells?

<p>To destroy microorganisms (B)</p> Signup and view all the answers

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