When we add sugar to tea or coffee we might not really reflect on how much sugar we scoop up. What is one teaspoon for you may actually be two ârealâ teaspoons, which would mean you are actually consuming more calories than you thought. A normal teaspoon of sugar vs a heaped teaspoon of sugar.
they are inversely proportional (increasing area decreases velocity) therefore in large vessels like the vena cava, blood has a low velocity blood also has a low velocity in the capillary beds, because of the increased cross-sectional area produced by many capillaries.
**** But the Main reason as to WHY would be for the diffusion of nutrients and waste it takes time for oxygen and other nutrients to go from the red blood cells to the cells that line the capillaries.so the red blood cells must go slow (low pressure) so that this mayhappen.Try getting groceries out a car going past your house when its going 15 -100 mph - it would be difficult.hope this helps=)-The other answer is correct, but blood pressure does not drop very significantly.