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.
â¢ 44 percent of offline adults have asked a friend or family member to perform an Internet search or complete another task for them. â¢ 23 percent of offline adults live with someone who does use the Internet at home. â¢ 14 percent of offline adults say they used the Internet at one time but no longer do so.