The force exerted by the blood onto the wall of blood vessels in all directions is referred as blood pressure. This is critically affected by the elasticity, resistance and viscosity of blood.
The systolic pressure is referred as “high peak” whereas diastolic pressure is referred as “low peak”. In the given passage, ventricular contraction is significantly pumps 70mL of blood into ventricular system. Blood pressure is the ration of systolic pressure to diastolic pressure.
In normal arteries, according to the speed and volume of the blood, the diameter of the blood vessel changes accordingly and optimum peripheral resistance is maintained which is essential for proper flow of blood.
Thus, the options (a), (c) and (b) are incorrect.
The force exerted by the blood onto the wall of blood vessels in all directions is referred as blood pressure. This is critically affected by the elasticity, resistance and viscosity of blood.
Therefore, the correct option is – d. The force that blood exerts on arterial walls as a ratio of the systolic pressure or high peak over the diastolic pressure or “low peak”.