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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.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
A physician is performing a colonoscopy on a client and viewing the internal structures of the colon A physician is performing a colonoscopy on a client and viewing the internal structures of the colon
Work and Gender: Women at Work in India Work and Gender: Women at Work in India
Basic tissue types and structures of the alimentary canal. Basic tissue types and structures of the alimentary canal.
The structures thought to mediate the sympathetic and behavioral responses conditioned to an ... The structures thought to mediate the sympathetic and behavioral responses conditioned to an ...
Video: The Vestibular System

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