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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").