The ventricular system and the main brain regions

This animation demonstrates the internal structure of the brain.

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Human body (female)

This animation introduces the most important systems of the human body.

Flat feet

Flat feet, or fallen arches, may cause a number of health problems.

The heart

The heart is the central pump of the cardiovascular system beating several billion times...

The mechanism of vision

The curvature of the lens of the eye changes when we look at a distant or at a near...

Deep vein thrombosis and pulmonary embolism

A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary...

Donating blood

Donating blood can save lives, since patients often need various blood products for their recovery.

Female reproductive system (basic)

The reproductive system is a series of organs working together for the purpose of...


The zygote is the initial cell formed when two gamete cells are joined by means of sexual...

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