White blood cells protect the body from infection. They are much fewer in number than red blood cells, accounting for about 1 percent of your blood. The most common type of white blood cell is the neutrophil, which is the immediate response cell and accounts for 55 to 70 percent of the total white blood cell count.he blood that runs through the veins, arteries, and capillaries is known as whole blood, a mixture of about 55 percent plasma and 45 percent blood cells. About 7 to 8 percent of your total body weight is blood.
parabola in British English. See all translations. parabolanoun [ C ] uk â /pÉËrÃ¦b.Él.É/ us â /pÉËrÃ¦b.Él.É/ specialized. âº a type of curve such as that made by an object that is thrown up in the air and falls to the ground in a different place. Thesaurus: synonyms and related words. Geometry: bends, loops & curves. anfractuous.
Axis of symmetry. This is a line about which a shape is symmetrical. That is, the shape on one side of the line is a mirror image of the shape on the other. The shape could be the graph of a function or a physical object. On the left below we can see that a parabola (graph of y=ax2+bx+c) has a vertical line of symmetry running through its vertex. On the right, a photo of a face has an axis of symmetry down the center.