The pressure of blood inside a blood vessel against the vessel wall, this pressure is blood pressure. Since blood vessels are divided into arterial, venous and capillary blood, there are also arterial and venous blood pressure, capillary pressure and venous blood pressure. The blood pressure usually referred to is the arterial blood pressure. The difference between systolic pressure and diastolic pressure is called pulse pressure, or pulse pressure. The arterial blood pressure of the body circulation is referred to as bloodpressure (BP). Blood pressure is the pressure that acts on the walls of blood vessels when blood flows through them, and it is the driving force behind the flow of blood through them. Ideal BP: Systolic BP <120mmHg, diastolic BP <80mmHg. Normal BP: 90mmHg <140mmHg systolic, 60mmHg <90mmHg diastolic. High limit of normal BP or pre-hypertension: Systolic BP in the range of 130-139mmHg and/or diastolic BP in the range of 85-89mmHg. Hypertension: Arterial BP that exceeds normal values. Abnormally elevated.