Synaptic transmission

Neurons transmit electrical signals via chemical and electrical synapses.

Mechanism of taste reception

Taste receptors convert chemical stimuli into electric signals.


A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.

Nervous system

The central nervous system consists of the brain and the spinal cord, the peripheral...

European garden spider

This animation demonstrates the anatomy of spiders through the example of a common...

The heart

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

Ancient Roman domus

Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.

Voice production

When producing sound, the vocal cords are vibrated by the air flowing out of the lung.

Connective tissues

Connective tissues include loose and dense connective tissues, adipose tissue, blood,...

Anatomy of the small intestine

The longest part of the digestive system, where most of the digestion and absorption...

Environmentally friendly vehicles

Combining a conventional internal combustion engine propulsion system with an electric...

Nuclear power plant

Nuclear power plants convert the energy released during nuclear fission into electric power.

Parts of the human body

This animation demonstrates the parts of the head, the torso and the limbs.

Tectonic plates

Tectonic plates can move in relation to each other.

Faulting (intermediate)

Vertical forces can break up layers of rock into fault blocks, which then move vertically...

Folding (advanced)

Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.

Atomic bombs (1945)

The atomic bomb is one of the most destructive weapons in human history.


The rise and drop of sea levels caused by the gravitational force of the Moon.

The water cycle (intermediate)

Water on Earth is in a continuous state of change. The water cycle includes processes...


Machines converting the energy of flowing or falling water into useful forms of power...

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