Muscular System: A Book Filled With Facts For Children

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Focusing on the muscular system's role in movement, the book highlights the strength of the masseters as the strongest jaw muscles and emphasizes the heart as the largest and most active muscle, beating over three billion times in a lifetime. It explains the distinction between voluntary and reflexive movements, the supportive function of tendons in joint stability, and the importance of core muscles in stabilizing the body. The description underscores the interconnectedness of various muscle groups in maintaining movement and stability.