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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.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
![Protraction and Retraction Protraction–Moving a body part forward. Retraction–Moving a body part bac](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_37_46_89532351.jpeg)
![Foot reflexology chart indicates points on the foot that reflexively correspond to other areas of th](https://biology-forums.com/gallery/47/medium_18099_24_09_12_10_38_22.jpeg)