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Bas_tet [7]
2 years ago
8

A dark thin protein that serves as the anchoring point of actin filaments at either end of the sarcomere.

Biology
1 answer:
valina [46]2 years ago
6 0

The ends of the actin filaments are anchored to the Z-line or disk.

The sarcomere is the primary functional unit of muscle fiber. It is flanked by a Z-band on each end with adjoining I-bands. The Z-band or disk is a dense fibrous structure composed of actin, α-actinin as well as other proteins.

Thin filaments or actin filaments are anchored at one end at the Z-band. Titin is connected to both the Z-band and the M-line. Thick filaments are attached in the middle of the sarcomere at the M-line.

An intermediary filament protein forms a meshwork from one Z-disk to the next across the myofibril. These networks are joined by actin through the protein dystrophin to the sarcolemma.

To learn more about sarcomere here

brainly.com/question/14005497

#SPJ4

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