Theca. various types of sheath in animals and plants: (1) A cell wall in certain amoebae (thecamoebae). (2) A chitinoid membrane in hydroid polyps; hence the division into the suborders Thecaphora and Athecata. (3) The connective tissue surrounding ovarian follicles in vertebrates (theca folliculi). (4) A tooth socket in the jawbone of mammals and crocodiles. (5) A capsule for spores in mosses.
LOCATION AND SIZE. Once known as Holland, the Netherlands is located in Western Europe. It borders Belgium to the south, Germany to the east and north, and the North Sea along its western coast. The country has a total area of 41,526 square kilometers (16,485 square miles).
The Netherlands is a country in Western Europe. More than 16 million people live there. To the north and west of the Netherlands is the North Sea. To the east is the country Germany and to the south is the country Belgium.The Netherlands is one of the countries that started the European Union.he Netherlands is also called Holland. Holland was a very rich area in the western part of the Netherlands, thus causing people to be mistaken. Some people who do not live in the western part of the Netherlands do not like it when people call the country Holland.