Locomotion and Movement in Tamil L-05 Lines and bands of Sarcomere Ft.Nikhil

Holà Friends Welcome to Our YouTube Channel Nikhil's Biology in this Channel Ft. Nikhil Will be Teaching Biology For Pre-medical Couses (NEET, AIIMS) in Regional Language Tamil Course- Class 11th And 12th Complete Biology NCERT review with past year NEET questions. Syllabus- Genetics Molecular Biology Classification System Cell Biology Biotechnology Human Physiology Plant Physiology Do Subscribe to this Channel for Regular Content on NEET Biology and to score more than 340+ in NEET Biology. Thank you 😊. Wish you all Good Luck A sarcomere (Greek σάρξ sarx "flesh", μέρος meros "part") is the complicated unit of striated muscle tissue. It is the repeating unit between two Z lines. Skeletal muscles are composed of tubular muscle cells (myocytes called muscle fibers or myofibers) which are formed in a process known as myogenesis. Muscle fibers contain numerous tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as alternating dark and light bands. Sarcomeres are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes. The costamere is a different component that connects the sarcomere to the sarcolemma. Quick facts: Part of, Latin … Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement. Myosin can only bind to actin when the binding sites on actin are exposed by calcium ions. Actin molecules are bound to the Z line, which forms the borders of the sarcomere. Other bands appear when the sarcomere is relaxed. A muscle fiber from a biceps muscle may contain 100,000 sarcomeres. The myofibrils of smooth muscle cells are not arranged into sarcomeres. Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. #NikhilsBiology #neettamil #neetbiology #HumanPhysiology

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