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Did you know?

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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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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Cyanide works by making the human body unable to use oxygen.

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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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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.

The structure of skin (a) and epidermis (b) at the microscopic level. The structure of skin (a) and epidermis (b) at the microscopic level.
A typical beginning technician tool set that includes the basic tools to get started. A typical beginning technician tool set that includes the basic tools to get started.
The level in the coolant recovery system raises and lowers with engine temperature. The level in the coolant recovery system raises and lowers with engine temperature.
Writers, readers, and erasers of the CTD phosphorylation code Writers, readers, and erasers of the CTD phosphorylation code
The IPCC projects sea level rise The IPCC projects sea level rise
Keeping your feelings to yourself may increase your stress level Keeping your feelings to yourself may increase your stress level
Video: Introduction to Insulin

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