401What is the largest organ of the human body?
402How many bones are there in a typical adult human skeleton?
403A human newborn baby is generally born with more bones than an adult mainly because of what later process?
404What is the longest bone in the human body?
405What is the smallest bone in the human body, located in the middle ear?
406How many chambers does a normal human heart have?
407The four chambers of the human heart consist of two atria and two of what other chamber?
408What is the primary function of red blood cells in the human body?
409Hemoglobin, the oxygen-carrying protein in red blood cells, contains which essential metal?
410What is the primary function of white blood cells in the human body?
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