Find the movement of Ca+2 in sequence from rest to muscle contraction.
In turn this triggers the sarcoplasmic reticulum to release calcium ions into the muscleinterior where they bind to troponin, thus causing tropomyosin to shift from the face of the actin filament to which myosin heads need to bind to produce contraction.So the correct option is' TnC- Cisternae-sarcoplasm'.