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Integumentary System

Hair

How many hairs are on the human body?

On the average human body, there are approximately five million hairs.



Development of hair in a newborn: A = 4-month-old fetus; B = 6-month-old fetus; C = newborn. (Sadler, T., Ph.D. Langman’s Medical Embryology. 9th Ed. Image Bank. Baltimore: Lippincott, Williams & Wilkins, 2003.)
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