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  4. The anatomical unit of muscle is

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Q. The anatomical unit of muscle is

NTA AbhyasNTA Abhyas 2020Structural Organisation in Animals

Solution:

Myofibrils are assembled of repeated structures called sarcomeres (the smallest functional unit of muscle fibre). However, a single muscle cell has many myofibril (muscle fibre) units. Each sarcomere is composed of actin (called thin) and myosin (called thick) filaments, arranged in a precise order, and protein complexes that support the filament structures.