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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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There are more sensory neurons in the tongue than in any other part of the body.

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Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

The segmented body plan of an annelid, as illustrated by an earthworm. The segmented body plan of an annelid, as illustrated by an earthworm.
Convergent evolution in body forms Convergent evolution in body forms
Growth of the body and brain is dramatic over the first 2 years. Growth of the body and brain is dramatic over the first 2 years.
A free-running circadian sleep–wake cycle 25.3 hours in duration. Despite living in an unchanging ... A free-running circadian sleep–wake cycle 25.3 hours in duration. Despite living in an unchanging ...
The four routes of entry into the human body for hazardous materials. The four routes of entry into the human body for hazardous materials.
Systems of the Human Body Systems of the Human Body
Video: Simple and Double Sugar

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