They are primarily responsible for maintaining and changing posture, locomotion, as well as movement of internal organs, such as the contraction of the heart and the movement of food through the digestive system via peristalsis.
Internet Users in the U.S.A. (2016*) 1  Share of U.S. Population: 88.5 % (penetration) 2  Total Population : 324,118,787. 3  Share of World Internet Users: 8.4 4  %. Internet Users in the World: 3,424,971,237.
In 2011, McKinsey Global Institute estimated that the Internet accounted for 3.4 percent of total GDP and one-fifth of all growth in GDP for the G8 countries plus five other major economies (South Korea, Sweden, Brazil, China and India.)