Anatomy and function of the penis

The male penis consists of the root, shaft and glans. When a man is sexually aroused, his brain sends signals to the nerves in the erectile tissue in the shaft. The penis becomes stiff and erects. Translation and dubbing: alugha Click here to see more videos: https://alugha.com/TerraX

LicenseCreative Commons Attribution-ShareAlike

More videos by this producer

High feasts of religions

Passover is an important feast in the Jewish spring month of Nissán. Easter is the highest feast of the Christians. The big feast at the end of Ramadan is one of the highest Islamic holidays. Author: ZDF/Sunday/Katrin Müller-Walde/Marietta Pauli/Maximilian Mohr Translation and dubbing: alugha Cl

Regional differences in sea-level rise

Sea level can deviate regionally from the global mean. Wind and currents push the water masses differently against the coasts and influence the level there. In addition, the earth's crust moves. Some coasts rise, others sink. Author: 3sat/nano/mobyDOK/Alexander Lahl/Max Mönch/Jean Schablin/Robert

What is the Wallace Line?

In the island world of Southeast Asia, the animal worlds seem strangely separated. How come? In the 19th century, naturalist Alfred Russel Wallace had a theory. Source: https://www.zdf.de/dokumentation/terra-x/was-ist-die-wallace-linie-creative-commons-clip-100.html https://www.zdf.de/dokumentati