|
|
By definition, when a medication is administered intravenously, its bioavailability is 100%.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
![Incentive spirometry. A portable incentive spirometer is useful for encouraging patients to exercise](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_25_45_100622042.jpeg)
![Children with Down syndrome have a small head, short, thick neck, flattened face, and a distinctive ...](https://biology-forums.com/gallery/47/medium_660365_18_01_17_1_36_58_24470192.png)