Luigi Galvani – 12.04.1798 died L. Galvani, Italian physicist, physician and physiologist.
While anatomical studies discovered the phenomenon of electrical stimulation organs.
Birds made sounds – Birds make sounds using a special organ called the lower larynx. Situated at the end of the trachea, it has no vocal cords, such as mammals. Their function is performed membrane located in the trachea and bronchi major. A loud sound is made possible by strengthening it in the air sac – special tabs lungs. In addition, organ voice bird consists of two parts which can work independently of each other, and some species are able to sing at the same time two different melodies. Many species of birds there is no organ voice, and the sound from such dates. Clatter of the bow (storks) or hitting with various hard objects (woodpeckers).
Complicated brain – It is the most complex organ, consisting of a hundred billion nerve cells (neurons). Each neuron in contact with other neurons through thousands of junctions (synapses), which means that your brain is more connections than the stars in the universe! A fragment of brain tissue the size of a grain of sand is a hundred thousand neurons and billions of synapses, and all communicate with each other.
Hemispheres domination – Researchers report that only 10% of people have left the more developed part of the body from the right. This need not, however, apply only to the dominant hand, but also the legs, sight or hearing. The dominance of the other hemisphere can manifest itself also in the shape of certain organs.