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Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including
In 1885 masked Nebraskans seeking access to water posed for photographer S. D. Butcher, who captione In 1885 masked Nebraskans seeking access to water posed for photographer S. D. Butcher, who captione
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
A) Alveolar sac; (B) alveoli with capillaries. A) Alveolar sac; (B) alveoli with capillaries.
Phillip Phillips - Miles (Audio) Phillip Phillips - Miles (Audio)
Fenestrated capillaries Fenestrated capillaries
Video: Nerve Impulse Transmission Animation

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