All muscles in the human body are ; ( D ) a bundle of fibrous tissues that contract
Most muscles in the human body are involuntary while the skeletal muscles are voluntary and can be controlled, therefore involuntary or voluntary nature of muscles is not true about all muscles in the human body.
Muscles are made of elastic fibers/ tissues which are bundled together. They can contract and expand when needed, which means they are flexible.
Hence we can conclude that All muscles in the human body are ; ( D ) a bundle of fibrous tissues that contract.
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