« previous next »
« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Cross Section of Skin and Free Nerve Endings Cross Section of Skin and Free Nerve Endings
Pulmonary embolism. The purple shaded section shows the area of the lung that is dying from lack of ... Pulmonary embolism. The purple shaded section shows the area of the lung that is dying from lack of ...
Cradle the head briefly in both hands to end this section. Cradle the head briefly in both hands to end this section.
Control of lipolysis in adipose cells by a cAMP-mediated cascade system Control of lipolysis in adipose cells by a cAMP-mediated cascade system
Midsagittal section of cerebellum and brain stem Midsagittal section of cerebellum and brain stem
Vascular Distribution and Control of Circulation Vascular Distribution and Control of Circulation
Video: Gas exchange - partial pressure, locations, external and internal respiration

For a complete list of videos, visit our video library