Other questions in this quiz

2. elastic fibres allow arteries and veins to...

  • stretch and recoil
  • constrict and dilate
  • not be damaged when the blood flowing though them is of a high pressure

3. capillaries are...

  • 2 cells thick
  • 100 cells thick
  • 1 cell thick
  • 10 cells thick

4. which is the correct order?

  • diastole, ventricular systole, atrial systole
  • atrial systole, ventricular systole, diastole
  • ventricular systole, atrial systole, diastole
  • atrial systole, diastole, ventricular systole

5. what happens when platelets come into contact with damaged vessel wall?

  • they release a chemical which activates more platelets causing a build up of platelets and so blood cannot flow though properly.
  • they change from discs to spheres with long projections and their cell surfaces change making them stick to the exposed collagen and to each other forming a platelet plug. they also release substances to activate more platelets.
  • they release a sticky substance and stick to the formed plaque, forming a platelet plug. they also release substances to activate more platelets

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