Virginal membrane

virginal membrane An obsolete term for hymen...

In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

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