In rigor mois muscle :: (A) Stiffens, (B) Shoens, (C) Stiffens and shoens, (D) Stiffens and lengthens
Answer is C. C i.e. Stiffens & shoen In rigor mois, muscle shoen (contracted) & stiffensQ, and the reaction changes from alkaline to distinctly acidic d/t local formation of lactic acid.