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Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Extension, abduction, and dorsiflexion. Extension, abduction, and dorsiflexion.
Extension, adduction, pronation, abduction, flexion, and plantar flexion. Extension, adduction, pronation, abduction, flexion, and plantar flexion.
Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual. Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual.
Tickler file using a file drawer. Tickler file using a file drawer.
Use a grinder or a file to remove the mushroom material on the end of a punch or chisel. Use a grinder or a file to remove the mushroom material on the end of a punch or chisel.
Flexion and extension of the shoulders Flexion and extension of the shoulders
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

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