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.
While availability is not as significant a barrier as it was in 2007, things have not gotten better in the past three years. Lack of access prevented 6 percent of offline Americans from connecting in 2010, and it rose to 7 percent in 2013.While the Pew report may show that the percentage of Americans who find themselves on the wrong side of the digital divide is shrinking, the numbers are still significant.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.