Blood Vessels Flashcards
1
Q
What is the structure of arteries?
A
1) Thick walls for high pressure of blood
2) Walls contain muscle and elastic fibres
2
Q
What is used if arteries narrow?
A
Stents to keep them open
3
Q
What do veins do?
A
Carry blood to heart
4
Q
What is the structure of veins?
A
1) Thin walls for low pressure blood
2) Valves so blood goes in right direction
5
Q
What do capillaries do?
A
Involved in exchange of materials at tissue
6
Q
What is the structure of capillaries?
A
1) Very narrow
2) Thin, permeable walls
7
Q
What specifically do capillaries do?
A
1) Take food and oxygen to cells
2) Take waste and C02 away from cells
8
Q
How do substances get to cells?
A
Through blood and diffuse through capillary walls
9
Q
What do arteries do?
A
Carry blood away from heart
