The force that blood exerts against the wall of a vessel is called Blood pressure . Hence statement 1 is correct. The pressure of blood is much greater in arteries than in veins. The pressure of blood inside the artery during contraction (ventricular systole) is called systolic pressure . The pressure of blood inside the artery during relaxation (ventricular diastole) is called diastolic pressure. Blood pressure is also called hypertension. It is caused by the constriction of arterioles , resulting in increased resistance to blood flow . It can lead to internal bleeding. A sphygmomanometer is used to measure blood pressure. Hence statement 2 is correct.