The weight of an average human male brain is about:
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Which one of the following is the largest organ in the human body?
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The _______ nail grows the slowest.
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The _______ nail grows the fastest.
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Color of the skin is due to the presence of:
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Which of the following glands secretes tears?
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Temperature in human beings is controlled by:
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Which of the following is connected with blood pressure?
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Which of the following control breathing rate in humans?
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Which gland controls the development of sex organs in humans?
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