Blood Vessels Flashcards
1
Q
do arteries carry blood towards or away from the heart?
A
(pulmonary artery) away
2
Q
do veins carry blood towards or away from the heart?
A
(pulmonary vein) towards
3
Q
what is the job of the capillaries?
A
for the transport of substances, exchange of materials at tissues
4
Q
what blood vessel has valves?
A
v eins = v alves
5
Q
arteries adaptations
A
- carries blood at high pressure
- small lumen, thick muscular walls
- walls have elastic fibres so they can stretch
6
Q
capillary adaptations
A
- only one cell thick to maximise diffusion
- small lumen
- very narrow
7
Q
veins adaptations
A
- large lumen
- thin walls
- blood carried at low pressure
- has valves
- valves prevent backflow of blood
