The Krause membrane or Z-line is a structure | vedclass

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(A) myofibril is composed of repeating functional units called sarcomeres. Each sarcomere is defined as the segment of a myofibril between two success

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Sarcomeres

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(A) myofibril is composed of repeating functional units called sarcomeres. Each sarcomere is defined as the segment of a myofibril between two successive $Z$-lines (also known as Krause's membrane). These $Z$-lines are dense,dark-colored protein discs that bisect the $I$-bands and anchor the actin filaments. Therefore,the $Z$-line acts as the boundary that separates two adjacent sarcomeres.

The Krause membrane or $Z$-line is a structure in a myofibril that separates two adjacent:

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