|
Author Question: Your assessment of L.J. reveals bibasilar crackles with moist cough; normal heart sounds; blood ... (Read 33 times) |
The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
By definition, when a medication is administered intravenously, its bioavailability is 100%.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.