why cardiac mussle works without rest?
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Heart has the capacity to work continuously for long is basically because of two capabilities:
1. Heart muscle is different from smooth muscle and skeletal muscle. It has more mitochondria (power generators)per cell. These muscle cells consume more energy.
2. There is an inherent mechanism of relaxation after every contraction. It may be in milliseconds but it provides rest to the muscle.
1. Heart muscle is different from smooth muscle and skeletal muscle. It has more mitochondria (power generators)per cell. These muscle cells consume more energy.
2. There is an inherent mechanism of relaxation after every contraction. It may be in milliseconds but it provides rest to the muscle.
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