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The protein that forms the thick filament in muscle cells

The attachment formed by a myosin head binding to a binding site on an actin filament

A complex consisting of three polypeptide chains

Junction between two neurones

Ions that remove tropomyosin from the actin

The chemical that provides energy for muscle contraction

Central part of the I band

Working against each other in a pair

A chemical that is released from one presynaptic membrane of one neurone to pass a signal to another neurone

The span between one Z-Line and the next Z-Line