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.
Switzerland is sometimes considered a tax haven due to its general low rate of taxation, its political stability as well as the various tax exemptions or reductions available to Swiss companies doing business abroad, or foreign persons residing in Switzerland.or tax purposes, residence may also arise if a person stays in Switzerland for 30 days, or for 90 days if he or she does not work. Moreover, non-residents are also taxed on certain Swiss assets or on the income from certain Swiss sources, such as from real estate, permanent business establishments or pensions.