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.
Seven percent of Americans surveyed cited lack of availability or access as the reason for not using the Internet. Although high-speed Internet may seem ubiquitous to those living in big cities or affluent areas, the fact remains that in many parts of the United States, access to the Web is still hard to come by.n Wednesday, the Internet was surprised to learn that a solid 15 percent of Americans arenât online. A new report by the Pew Internet and American Life Project notes that even though more and more aspects of daily life are moving online, a significant portion of Americans donât use the Internet.