Blood Flashcards
1
Q
Artery
A
-carry blood away from the heart
-thick, elastic walls to cope with high pressure
-narrow lumen to maintain high pressure
2
Q
Vein
A
-valves to prevent backflow of blood
-wide lumen
3
Q
Capillary
A
One cell thick wall for diffusion of minerals
4
Q
Plasma
A
Carries everything
5
Q
Red blood cells
A
-bioconcave (high SA)
-no nucleus (haemoglobin)
6
Q
White blood cells
A
-engulf pathogens
-produce antibodies
-produce antitoxins
7
Q
Platelets
A
Clot blood
8
Q
Artificial blood
A
-adds volume so heart can pump
-can’t carry oxygen
9
Q
Blood flow rate
A
Blood flow rate = blood (ml) / time (mins)
10
Q
Why is there a change in blood flow rate to some muscles during exercise?
A
There is increased blood flow to the muscles to allow for respiration
