All neurons have a cell body and one or more fibres. These fibres vary in length from microscopic to over 1 metre. There are two different kinds of nerve fibres: fibres that carry information towards the cell body, called dendrites, and fibres that carry information away from it, called axons.
The flute has also always been an essential part of Indian culture and mythology, and the cross flute believed by several accounts to originate in India as Indian literature from 1500 BCE has made vague references to the cross flute. Acoustics
Proof of the existence of pan flutes we also find throughout Europe. In France, in the old Roman colony of Alisia, an instrument with 7 pipes were found tuned diatonically. Evidence of the pan flute's use in Romania can also be found in a few booklets. One such booklet is The text-book of King Neagoe Basarab for his son Teodosie, dating from the early 16th century. In the 19th and 20th centuries the Romanian pan flute is seen more and more in Europe, and we find an increasing amount of documentation on the instrument. In 1843 in Bucharest alone, as many as 13 professional pan flute players were registered at the musicians association. The period between the two world wars was a heyday for pan flute players. They went everywhere in Europe. The amount of players numbered less than in the 19th century, but the quality of their playing was magnificent. Around the second world war there were no more than 16 registered pan flute players in the whole of Romania. The pan flute revival came about after the war, caused by Fanica Luca, the famous pan flute player who had performed at the world exhibitions of 1937 (Paris) and 1939 (New York).