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 87: The Geography of Planet Earth
Episode 86: The Evidence for Evolution
Episode 85: Introduction to Quantum Field Theory
Episode 84: Advanced Quantum Mechanics Part II
Episode 83: Advanced Quantum Mechanics Part I
Episode 82: Racial Differences in Intelligence
Episode 81: Intelligence Part 2
Episode 80: Intelligence Part 1
Episode 79: Basic Concepts in Statistics
Episode 78: Hearing
Episode 77: Nuclear Physics and Radioactivity
Episode 76: GDP and Unemployment
Episode 75: Cellular Respiration
Episode 74: Minerals and Rocks
Episode 73: Introduction to the Immune System Part 2
Episode 72: Introduction to the Immune System Part 1
Episode 71: Political Ideologies
Episode 70: Animal Diversity Part 2
Episode 69: Animal Diversity Part 1
Episode 68: Protein Structure and Function
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