Glossar

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Click one of the letters above to be taken to a page of all terms beginning with that letter.
Open comedo search for term

Non-inflammatory comedo (white comedo or whitehead)

Oral sex search for term

Sexual practice in which penis or clitoris are stimulated by mouth and tongue.

Organism search for term

A complex living system, which consists of a great number of cells and their products, forming a system which is organised hierarchically.

Ozone search for term

Ozone is a specific form of oxygen. In an altitude of 25 to 50 kilometres above the surface of the earth, this substance accumulates forming the so-called ozone layer.

Ozone layer search for term

The ozone layer is part of the earth’s atmosphere. It is located in the stratosphere, in an altitude of 25-50 kilometers. surface. The ozone layer filters the sunlight, protects us against the damaging ultraviolet radiation (UV-B). Even though the concentration of ozone in the earth’s atmosphere is less then a part per million, it holds back almost 99 percent of the sun’s UV radiation. See also information provided in the learning module “Skin and Sun”