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.
Oxygen-poor blood (shown in blue) flows from the body into the right atrium. Blood flows through the right atrium into the right ventricle. The right ventricle pumps the blood to the lungs, where the blood releases waste gases and picks up oxygen. The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium.