The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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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.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
Bacteria Diagram
Superior orbital fissure
Human Eye Diagram
Blank cell diagram
Principle of Progression
Diagram showing the sites of action of different antihypertensive drugs.