Forty percent of your body mass is made up of what?

Forty percent of your body mass is made up of what?

• Correct Answer: skeletal muscle
• cardiac muscle
• skin
• blood

Explanation: Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body. Forty percent of your body mass is made up of skeletal muscle. Skeletal muscles generate heat as a byproduct of their contraction and thus participate in thermal homeostasis. Shivering is an involuntary contraction of skeletal muscles in response to perceived lower than normal body temperature. The muscle cell, or myocyte,.

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