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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.
Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.