A journey through the mechanisms of muscles and muscular contraction. I begin by outlining the key structural elements of muscle cells, including the sarcolemma, sarcoplasmic reticulum, the myofibrils and their myofilaments. I then explain the sliding filament mechanism of muscle contraction, and how it is governed by neural signals through the release of calcium. I conclude with a brief overview of the types of muscle contractions, the difference between fast twitch and slow twitch muscle fibres, and a short discussion of some metabolic aspects of muscle function, including the role of creatine phosphate. Recommended pre-listening is Episode 26: Human Organ Systems.
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Episode 126: Depression and Serotonin
Special Episode: Genetic Testing
Episode 125: Earthquakes
Episode 124: Volcanoes
Episode 123: Respiratory and Circulatory Systems Part 2
Episode 17: Energy, Work, and Momentum
Episode 16: Profits and Competition
Episode 15: Chemical Bonding
Episode 14: Principles of Quantum Mechanics
Episode 13: Newtonian Mechanics
Episode 12: The Price System
Episode 11: The Origin of the Universe
Episode 10: The Cell
Episode 9: Matter and Molecules
Episode 8: History of the Atom
Episode 7: Introspection Illusion
Episode 6: Thermodynamics
Episode 5: Corporate Conspiracies
Episode 4: The Origin of Life
Episode 3: Organic Agriculture Part 2
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