Other questions in this quiz

2. The higher the partial pressure of O2 the ....?

  • Higher the oxygen saturation with heamoglobin
  • Lower the oxygen saturation with heamoglobin
  • The flatter the dissociation curve

3. What is not an adaptation of the vein?

  • Small lumen to maintain blood pressure
  • Valves - Stop backflow of blood
  • Thin vein walls- Skeletal muscle produces pressure by moving against it
  • Collagen, smooth muscle and elastic tissue is much more less than in an artery

4. What is not an adaptation of an artery?

  • Thick wall containing collagen and elastic tissue and smooth muscle- Withstand high pressure
  • Valves to stop backflow of blood
  • Small lumen - Pressure constant
  • Folded Endothelium that can be unfolded when the artery stretches to reduce friction

5. Which of these statements are not correct?

  • The septum separates the right side of the heart from the left
  • Atria walls are the thinnest because most of the blood moves down by gravity
  • The right ventricle wall is the the thickest because it has to pump blood to the lungs
  • The left ventricle wall is the thickest because it has to pump blood to the rest of the body

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