Photograph by Rich Reid. Tundras are among Earth's coldest, harshest biomes. Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy and rainfall is scant. Tundra lands are snow-covered for much of the year, until summer brings a burst of wildflowers.
Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell. The statement that the tongue is the strongest muscle in the body appears frequently in lists of surprising facts, but it is difficult to find any definition of strength that would make this statement true. 2  Note that the tongue consists of eight muscles, not one.
Top 10 Strongest Muscles in The Body. Muscles are the bodyâs soft fibers that are built mainly by proteins. Muscle tissues is of three types; skeletal, smooth, and cardiac. The skeletal muscles are the ones responsible for body movements done voluntarily. The percentage of skeletal muscles in the body of human male is 40% and females 36%. Smooth muscles are responsible for involuntary movements and are found in bladders, uterus, intestine, the bronchi, vessels, and stomach.