distinguish between red and white muscles
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Red muscles have slow-twitch fibers which can contract slowly for a long period of time without fatigue. ... White muscles have fewer capillaries, myoglobin, and mitochondria. They have fast-twitch fibers, which can contract really fast, with a lot of force, but not for very long.
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Explanation:
RED MUSCLES
Red muscles are skeletal muscles that are rich in capillaries, myoglobin, and mitochondria. Capillaries are very small blood vessels that deliver oxygenated blood to the muscles. This oxygen is taken up by a protein called myoglobin. The myoglobin then helps provide the oxygen to the mitochondria, the sort of power plant of the cell. They use oxygen, among other things, to produce a lot of energy.
WHITE MUSCLES
White Muscles. White muscles have fewer capillaries, myoglobin, and mitochondria. White muscles contain fast-twitch fibers, enabling them to contract real fast and with a lot of force, but they can't sustain the contraction for very long before tiring out.
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