the answer can be veins or ateries or venules or capillaries... sorry i really do not know the answer... hehehe... :)
cappillaries
the answer can be veins or ateries or venules or capillaries... sorry i really do not know the answer... hehehe... :)
cappillaries
Blood flow in the center of a large vessel is faster because the walls of the blood vessel may have a buildup of cholesterol on them.
When the diameter of a blood vessel increases, the pressure within that vessel typically decreases, according to Poiseuille's law. This is because a larger diameter allows for greater blood flow and reduces resistance. Therefore, as the vessel dilates, the pressure exerted by the blood against the vessel walls generally decreases, provided that the volume and flow rate remain constant.
The relationship between blood flow through a vessel and the radius of the vessel can be expressed as BF=1/pi r4 (where pi is equal to 3.14.....). So a change in the radius of a vessel has a large effect on the blood flow through the vessel.
The longer the vessel is the more friction it applies on the passing blood, the less the blood flow is.
artery
Contractions and relaxation of heart chambers make the blood flow inside the tubes or blood vessel.
cappillaries
Capillaries
Branchial