Match Each Term with Its Corresponding Description Regarding the Sliding-Filament

Match each term with its corresponding description regarding the sliding-filament theory.
-Protein that has receptor sites for an ion that causes it to change shape and pull another protein away from the receptor sites on the actin

A) Troponin
B) Myosin
C) Actin
D) T-tubules
E) ATP
F) Calcium
G) Cross-bridges
H) Tropomyosin
I) Acetylcholine