The sliding filament model of contraction involves .

The sliding filament model of contraction involves actin and myosin sliding past each other and partially overlapping

Explanation:

Sliding filament model states that during muscle contraction the myofilaments myosin and actin slide towards each other and overlap. This shortens the sarcomere and the entire muscle/ Muscle cells are shocked by nerve impulses from motor neurons.

The force behind the muscle contraction is the ratchet movement of the tiny myosin heads toward the centre of thei sarcomere. This ratchet movement occurs many times during muscle contraction.

Points of the sliding filament theory will be as follows :

one would be wind another would be water density