Match the following terms with the correct definition.      

____Z-disc     

____Sarcomere     

____A band     

____H zone     

____I band     

____M line

a. The dark band containing the entire length of the thick filament

b. The band of proteins in the middle of the H zone

c. The boundary between sarcomeres

d. The functional unit of contraction

e. The middle region of the A band containing only thick filaments

f. The light band containing only thin filaments