Did you know?
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
Did you know?
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Synapomorphies reveal the relationships among tetrapods
Applying developmental theory to care
Gender Schema Theory
Early claims of relieving headaches with Bromo-Seltzer
The Cannon-Bard Theory of Emotion
Days 24–25 Pharyngeal arches develop. They will contribute to the face, neck, larynx, and pharynx.