Blood pressure increases if the diameter of the blood vessel decreases.
increase in the diameter of blood vessel. it increases the blood flow
There are three factors that increase peripheral resistance. These factors include autonomic activity, pharmacologic agents, and blood viscosity. Each factor increases the constriction of arteries, which in turn causes peripheral resistance.
Blood flow is directly proportional to blood pressure, vessel diameter, and heart rate. When these factors increase, blood flow also increases, and vice versa.
The resistance offered by the peripheral circulation is known as the systemic vascular resistance (SVR). Vasoconstriction (i.e., decrease in blood vessel diameter) increases SVR, whereas vasodilation (increase in diameter) decreases SVR. this constriction and dialation decreases or increases the volume in which the vessles can potensially hold. the blood pressure is subsequantly altered as more or less vascular space is provided.
Resistance changes dramatically with changes in diameter of blood vessels (arterioles are one type of blood vessel). If you INCREASE the diameter of the arteriole, you DECREASE the resistance and thus DECREASE the blood pressure.
Erosion / pipe bursting /pressure vessel failures
Blood Pressure can be affected by all three factors. If the vessel diameter increases (vasodilation) Blood Pressure can be lowered. Blood Viscosity can also have an affect on blood pressure, the more viscous (thicker) the blood is, the slower it will flow through the body. Finally, irregular surfaces of the blood vessel wall can cause them to catch or become stuck, which ultimately slows blood flow, reducing blood pressure!
Measure external diameter. (A) Measure internal diameter. (B) Subtract B from A
Calculating the radius of dish end size from the pressure vessel diameter is easy. All you have to do is add the blank radius by scaling the drawing from the side and you add five percent.
No, humidity in a closed vessel will not increase with an increase in air pressure. Humidity is dependent on the amount of water vapor in the air, not the air pressure. The relative humidity will remain the same unless more water vapor is introduced.
Vasodilation: Widening of blood vessels resulting from relaxation of the muscular wall of the vessels. What widens is actually the diameter of the interior (the lumen) of the vessel. The opposite of vasoconstriction.