Mechano-chemical Interactions in Cardiac Sarcomere Contraction: A Computational Modeling Study
Fig 3
Build-up of tension in the thin filament.
Each cross-bridge (XB) generates an individual force FXB. Tension S(x) at location x is the sum of each individual XB force from the start of the single overlap region closest to the mid line (x = 0) to the position x. So, tension along the thin filament increases with each XB exerting force.