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.
Gravity makes blood flow down easier than it flows up. If you hold one hand above your head and the other at your side, the lower hand will be red while the higher one is pale. Step two to control bleeding uses this principle. Elevate the wound above the heart. By elevating the wound, you slow the flow of blood. As the blood slows, it becomes easier to stop it with direct pressure. Remember, the wound must be above the heart and you must keep direct pressure on it.