Blood 2

Question 1

What are platelets?

Answer 1

Small fragments of cells without a nucleus

Question 2

What are platelets involved in?

Answer 2

Clotting of blood

Question 3

Explain 3 ways how the red blood cell is adapted for its function

Answer 3

1) Biconcave shape increases SA:V ratio - short diffusion distance for O2
2) Packed with haemoglobin which binds to oxygen
3) No nucleus - more space for haemoglobin

Question 4

Where are the atrioventricular valves found?

Answer 4

Between atrium & ventricle