The blood vessels-arteries, capillaries, and veins-are an extensive network of elastic tubes that carry blood to and from the heart and throughout the body. The blood vessels are the transportation system of the human body.he blood vessels-arteries, capillaries, and veins-are an extensive network of elastic tubes that carry blood to and from the heart and throughout the body. The blood vessels are the transportation system of the human body.
Depict, portray, sketch imply a representation of an object or scene by colors or lines, or by words. Depict emphasizes vividness of detail: to depict the confusion of departure. Portray emphasizes faithful representation: We could not portray the anguish of the exiles. Sketch suggests the drawing of the outlines of the most prominent features or details, often in a preparatory way: to sketch the plans for a community development.
2-1. A map is a graphic representation of a portion of the earth's surface drawn to scale, as seen from above. It uses colors, symbols, and labels to represent features found on the ground. The ideal representation would be realized if every feature of the area being mapped could be shown in true shape.