The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Cyanide works by making the human body unable to use oxygen.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
Cross Section of the Human Brain
The divisions of the adult human brain.
Neurons in a newborn’s brain
The body’s survival depends on mechanisms that maintain internal homeostasis
The Cranial Nerves as They Exit the Base of the Brain