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Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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

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There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

The nucleus and nuclear envelope The nucleus and nuclear envelope
A molecular model showing chromosome territories in the cell nucleus of humans A molecular model showing chromosome territories in the cell nucleus of humans
The iron atom of heme has six coordination bonds: four in the plane The iron atom of heme has six coordination bonds: four in the plane
Nucleus. Nucleus.
The Bohr model of the atom. The nucleus contains protons and neutrons, and electrons orbit around ... The Bohr model of the atom. The nucleus contains protons and neutrons, and electrons orbit around ...
Opener Chromosome territories in a chicken cell nucleus Opener Chromosome territories in a chicken cell nucleus
Video: Male Reproductive System - Testosterone

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