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 Swiss franc (CHF) is the only official currency in Switzerland (and in Liechtenstein). The franc is the only currency accepted everywhere. The Euro is the currency in the neighboring countries Germany, France, Italy and Austria, and in many other European countries. Nevertheless, you can pay with Euros in many shops, hotels, rail stations and gas stations in Switzerland. This is convenient if you're only in transit or only stay for one night.