Component 3.2 - Blood Flashcards
1
Q
How are red blood cells adapted to their function?
A
Thin centre - reduces the diffusion distance making gas exchange faster
Biconcave shape - larger surface area, so more oxygen diffuses across membrane
No nucleus - there is more room for haemoglobin so more oxygen can be carried
Contain haemoglobin - pigment which reacts with oxygen
2
Q
What is contained in plasma and what is its function?
A
It is about 90% water
Transports nutrients, hormones, excretory products and also distributes heat
