Summary

• The right ventricle pumps blood to the lungs
• The left ventricle pumps blood to the body
• Heart rate is controlled by cells located in the right atrium which is a pacemaker
• Artificial pacemakers are electrical devices used to correct irregularities in heart rate
• Blood is a tissue made of different cells which can be made viable using stains
• Blood type is determined by antigens which are proteins on the surface on the blood cell
• Agglutination is when blood cells clump
• Coronary heart disease develops when a coronary artery is blocked by a plaque
• The blockage reduces blood flow to the heart and prevents oxygen and glucose being delivered to respiring heart cells
• Health is the state of physical and mental well being
• Malignant tumour cells are cancers
• Benign tumours are growths of abnormal cells