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Glossary of Physiology Terms
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M line
Definition:
In striated muscle sarcomere, the M line is the attachment site for the thick filaments. The M line is in the center of the A band and, thus, it is in the center of the sarcomere.

Related glossary terms/phrases:
A band
H zone
I band
Z disk






Posted: Thursday, January 8, 2015
Last updated: Thursday, January 8, 2015