Why does the pressure in the arteries and arterioles fall as the blood moves awa

he blood pressure decreases as the blood travels farther away from the heart BECAUSE: the heart is a pump. Imagine with me a water pump. The water pump is pumping water through a smooth straight length of pipe. Each big "pump" makes the pressure go up to 80 to 120mmHg. The inside pressure that is there at all times inside the pipe because it is so full of water is always staying around 45 to 70 mmHg. These numbers are known as systolic and diastolic pressures. Okay? So. If the pipe is really long and not straight but very curvy sometimes then the water pressure at the end of the plumbing will necessarily be lower, will it not? There is less blood pressure in the artery of your big toe, for example than in your left arm.