This article is from the Stretching FAQ, by Brad Appleton Brad_Appleton@ivhs.mot.com with numerous contributions by others.
Together, muscles and bones comprise what is called the "musculoskeletal
system" of the body. The bones provide posture and structural support for
the body and the muscles provide the body with the ability to move (by
contracting, and thus generating tension). The musculoskeletal system also
provides protection for the body's internal organs. In order to serve their
function, bones must be joined together by something. The point where bones
connect to one another is called a "joint", and this connection is made
mostly by "ligaments" (along with the help of muscles). Muscles are
attached to the bone by "tendons". Bones, tendons, and ligaments do not
possess the ability (as muscles do) to make your body move. Muscles are
very unique in this respect.
 
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