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).
Amsterdam is the capital of the Netherlands. It is located in the Southeastern part of the province of North Holland, which is in the west of the country. The Netherlands â often also called Holland â is located in the Northwestern part of Western Europe.hat depends on what you are looking for. The summer season is very popular, of course, but Amsterdam is a fun and fascinating city any time of the year. The main tourist season is July and August, with the best chance of good, sunny weather. The cultural season runs from September to May.