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Author Question: Ekman and Friesen (1971) collected convincing evidence that facial expressions are universal. In ... (Read 62 times) |
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.