Understanding the Biochemistry — and Intelligent Design — of Muscle Contraction

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Muscle contraction, which we so easily take for granted, is an incredibly complex and elegant process. Source
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For Males, an Engineering Marvel that Originates in the Brain

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The male erection and ejaculatory reflex require multiple physiological processes to work together in an incredible coordinated manner. Source
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What if Our Muscles Were Less Powerful?

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As every medical student comes to learn when first dissecting the human body at medical school, our limbs are almost entirely composed of muscles. Source
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