Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Did you know?
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Did you know?
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
Cells dividing
Furchgott's discovery that endothelial cells produce a vasodilating substance.
Iron deficiency anemia blood cells.
The Amounts of the Different Minerals in Your Body The major minerals are present in larger amounts
T Cells: Development of Self-Recognition and Self-Tolerance