PHYSIOLOGY
SKELETAL MUSCLE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -The actin–myosin interaction produces two types of movements: force generation between actin filaments leading to contractions, such as in muscle contraction, cell motility, and cytokinesis; and transport of subcellular organelles and macromolecular complexes by myosin motors along actin filaments.
Detailed explanation-2: -Note:The key difference between actin and myosin is that actin is a protein that produces small, contractile filaments within muscle cells, while myosin is a protein that produces thick, contractile filaments within muscle cells.
Detailed explanation-3: -A sarcomere is the basic contractile unit of a myocyte (muscle fibre). A sarcomere is composed of two main protein filaments (thin actin and thick myosin filaments) which are the active structures responsible for muscular contraction.