Gas Exchages Flashcards
(8 cards)
1
Q
What do red blood cells do
A
They carry Oxygen
2
Q
Who was the first scientist to correctly describe how blood moved around the body.
A
William Harvey
3
Q
Plasma
A
• Plasma on its own is actually is yellow.
- Plasma transports substances around the body e.g. carbon dioxide, red blood cells, white blood cells and heat
- Plasma is an excellent solvent as it is 90% water.
4
Q
Platelets
A
- To prevent blood loss.
- To prevent the entry of microorganisms.
• Haemophiliacs have a platelet deficiency and cannot clot the blood.
5
Q
White blood cells
A
• Function: To fight against infection caused by microorganisms.
6
Q
Arteries
A
• Arteries carry blood Away from the heart.
7
Q
Veins
A
Veins carry blood towards the heart.
8
Q
Capillaries
A
• Capillaries connect arteries and veins and it is here where the substances are exchanged between cells.
