Not much according to Consumer Reportsâ latest mattress tests. The Sleep Number c2 Bed matched the Sleep Number i8 bed Pillowtop, $3,000, in our tests for back and side support. Even better, we bought the Sleep Number c2 Bed on sale for $700. Here are the details plus news on other new mattresses in our tests. For our body-support tests we graph the spineâs natural curve on a range of test subjects.
1. The fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated by the heart through the arteries and veins, carrying oxygen and nutrients to and waste materials away from all body tissues. 2.lood varies in color from a bright red in the arteries to a duller red in the veins. The total quantity of blood within an individual depends upon body weight; a person weighing 70 kg (154 lb) has about 4.5 liters of blood in the body.
Plasma is the largest single component of blood, and makes up about 55% of total blood volume. It is a clear, straw-coloured liquid, which carries platelets, red and white blood cells. It contains over 700 proteins and other substances, which can be extracted and which are key ingredients in medical products. Once separated from blood cells, plasma can be: used in blood transfusions.