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.
If we include that 10% of Americans with the 70% who have traditional broadband, that means that 80% of Americans have either a broadband connection, a smartphone, or both. Here is how the 80% breaks down: 1  46% of Americans have both a home broadband connection and a smartphone.