Tension triggers muscle building

Skeletal muscles are built from small contractile units, the sarcomeres. They are connected in a well-ordered series to form myofibrils that span the entire muscle. Contractions of these sarcomeres result in contraction of the respective muscle. Scientists recently identified a key mechanism how this muscle architecture is built during development. 'Mechanical tension is the essential trigger,' explains the group leader.

by via Latest Science News -- ScienceDaily