Muscle contraction steps

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When a muscle is ready to contract, calcium in the muscle fibers exposes myosin-binding sites on actin filaments. Actin−myosin cross-bridges form. By hydrolyzing ATP, myosin heads push up against actin fibrils, contracting the sarcomere. Calcium and ATP presence enables cross-bridge cycling.

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(2)... This process will happen continuously in a cycle as long as Ca+ and ATP are present. Rigor Mortis occurs after you die. The SR deteriorates andCa+ spills out, however there is a lack of ATP (because no oxygen). Ca+ causes myosin/actin attachment, but they cannot detach because of the lack of ATP.  This leaves your muscles in a permanent binding state of binding of myosin/actin. Biology Cell, Tissue Biology, Anaerobic Respiration, Newspaper Design Layout, Rigor Mortis, Basic Anatomy And Physiology, Medical Photos, Medical School Studying, Muscle Contraction

(2)... This process will happen continuously in a cycle as long as Ca+ and ATP are present. Rigor Mortis occurs after you die. The SR deteriorates andCa+ spills out, however there is a lack of ATP (because no oxygen). Ca+ causes myosin/actin attachment, but they cannot detach because of the lack of ATP. This leaves your muscles in a permanent binding state of binding of myosin/actin.

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Back Pain | Neck Pain | Rehab on Instagram: "🌀🫀💨 Experience the Symphony of Internal Motion 🌀🫀💨 By @sciepro.official Dive into the captivating world of bodily functions with our latest animation. Witness the rhythmic dance of peristalsis in the intestines, the steadfast beating of the heart, and the life-giving expansion and contraction of the lungs. This intricate choreography keeps us alive and thriving. Perfect for health enthusiasts, medical students, and anyone fascinated by…

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