Definition of Z line
: any of the dark thin bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres
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“Z line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Z%20line. Accessed 17 May. 2022.
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Time Traveler for Z line
The first known use of Z line was in 1916
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