Other questions in this quiz

2. Platelet plug formation is a ___________ feedback cycle, that takes around a minute to form

  • Positive
  • Negative

3. The mature megakaryoblast presses against a sinusoid in the _________ and sends cytoplasmic extensions through the _______ wall, which rupture and release platelets into the bloodstream

  • Red marrow, spongy mesophill
  • Red marrow, sinusoid
  • Yellow marrow, sinusoid

4. When platelets adhere to collagen, they release chemical messengers including: _______, serotonin and thromboxane A2

  • Adenosine phosphate
  • Adenosine diphosphate
  • Adenosine triphosphate

5. When platelets aggregate and stick together, which step in haemostasis is this?

  • Coagulation
  • Platelet plug formation
  • Vascular spasm


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