|
|
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.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Everyone has one nostril that is larger than the other.
The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.
![The degree of cerebral cortex folding in different mammalian species. The brains are not shown to sc](https://biology-forums.com/gallery/47/medium_33_29_07_11_7_24_35.jpeg)
![Ileal conduit; A, ureters implanted into ileal segment; B, closure of proximal end of ileal conduit.](https://biology-forums.com/gallery/47/medium_18099_24_10_12_3_58_46.jpeg)