The sarcomeres shortens when the muscle contract.
By Adam Safi
during skeletal muscle contraction ,I band and H zone shortens. Sarcomeres
sarcomeres
The units of contraction called sarcomeres give striated muscle this appearance. Smooth muscle also has sarcomeres but they are not as neatly arranged so they appear smooth.
No
Smooth.
shortens
shortens
true
sarcomeres
myofibrils
muscle fibers contracting
Skeletal muscle tissue is made of many fibers, which have many sarcomeres with overlapping actin and myosin protein strands. When muscles contract their proteins overlap eachother and shorten the fiber, which then increases height but shortens in length of each fiber.