The sarcomere shortens when the myosin heads of the thick filaments slides with actin heads of the thin filaments to form cross bridges.This is a True statement.
Step-by-step explanation:
Muscle contraction takes place by sliding filament contraction of the filaments of the sarcomere. During a contraction, the actin (thin) and myosin (thick) filaments reach the sarcomere’s center and then overlap with each other.
During this process, the sarcomere shortens to contract these muscle cells at the same time maintaining the length of the filaments.
The sarcomere shortening leads to cross- bridge formation by the actin and myosin components which initiates the filament movement. This sliding of filaments and sarcomere shortening leads to contraction of the skeletal muscle .