Why is the school of thought developed by Wilhelm Wundt came to be called Structuralism?

What is the most appropriate method of gaining weight (muscle mass)

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

How do ratio scale and diagrammatic scale work