Biology - 18/09/17 Flashcards
1
Q
What do veins have as an adaptation?
A
They have valves to prevent backflow.
2
Q
Where does oxygenated blood enter the heart from?
A
The pulmonary vein.
3
Q
What do alveoli do?
A
Transfer oxygen to the blood through gas exchange.
4
Q
Where does oxygenated blood flow out of the heart to?
A
The rest of the body.
5
Q
What are statins?
A
Drugs which reduce fatty deposits in the artery.
6
Q
What are stents?
A
Wire meshes which open up the artery and help blood to flow better.
7
Q
Why does the heart have a septum?
A
To stop oxygenated and deoxygenated blood from mixing.
8
Q
What does the tricuspid and bicuspid valve do?
A
Prevent backflow in the heart.
9
Q
Which has higher pressure: veins or arteries?
A
Arteries.
10
Q
Where does deoxygenated blood flow into the heart from?
A
The vena cava.
