The human sperm is composed of a head and a tail, the tail being divisible into a neck, a middle piece, a principal piece, and an end piece; the head, 4-6 mcm in length, is a broadly oval, flattened body containing the nucleus; the tail is about 55 mcm in length. Synonym(s): sperm cell, spermatozoon. [G. sperma, seed]
Switzerland is the 15th largest export economy in the world. In 2016, Switzerland exported $302B and imported $268B, resulting in a positive trade balance of $34.7B. In 2016 the GDP of Switzerland was $659B and its GDP per capita was $62.9k. The top exports of Switzerland are Gold ($82.1B), Packaged Medicaments ($39.7B), Human or Animal Blood ($26.2B), Base Metal Watches ($12.1B) and Jewellery ($10.8B), using the 1992 revision of the HS (Harmonized System) classification.
The report said that based on 2005 purchasing power parity (PPP) values, China would have GDP of $15.26 trillion by 2016, exceeding the United Statesâ GDP of $15.24 trillion for the first time and becoming the worldâs largest economy. The Chinese economy is forecast to be 1.5 times larger than the U.S. by 2030 and 1.7 times bigger by 2060.