2.2.2 The Heart Flashcards
1
Q
Atria
A
- Top chamber
- Where blood enters your heart and contracts to force blood into the ventricles
2
Q
Ventricles
A
- bottom chamber
- contracts and forces blood out of the heart
3
Q
Valves
A
Close to stop blood flowing backwards and out of the heart
4
Q
Pacemaker
A
Regulates the rate of your heart
5
Q
What causes the sound of your heart beating?
A
The valves closing to stop blood flowing backwards
6
Q
What happens of the pacemaker stops working properly?
A
Heart beats to slow so not enough oxygen is supplied
