Within each skeletal muscle fiber densely packed, striated subunits known as ____ extend in parallel rows from one end of the ce
ll to the other leaving little room between for other organelles. the striations in these elongated structures are caused by the regular arrangement of sarcomeres
The striated subunits of the skeletal muscle fiber which are densely packed are called Sarcomeres.
<h3>What are Sarcomeres?</h3>
Sarcomeres are biological units which are the basic contractileunit of muscle fiber. Each sarcomere is composed of two main protein filamentnamely,actin and myosinwhich are the active structures responsible for muscular contraction.
