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.
Among older adults who use the internet, 71% go online every day or almost every day, and an additional 11% go online three to five times per week. These older internet users also have strongly positive attitudes about the benefits of online information in their personal lives.nternet use and broadband adoption among seniors each fall off notably starting at approximately age 75. Some 68% of Americans in their early 70s go online, and 55% have broadband at home.