The Mammalian Heart (CIE IGCSE Biology: Co-ordinated Sciences (Double Award))

• The heart is labelled as if it was in the chest so what is your left on a diagram is actually the right hand side and vice versa
• The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs
• The left side of the heart receives oxygenated blood from the lungs and pumps it to the body
• Blood is pumped towards the heart in veins and away from the heart in arteries
• The two sides of the heart are separated by a muscle wall called the septum
• The heart is made of muscle tissue which are supplied with blood by the coronary arteries

Structure of the heart