Structure [edit]. Nervous tissue is composed of neurons, also called nerve cells, and neuroglial cells. Typically, nervous tissue is categorized into four types of tissue. In the central nervous system (CNS), the tissue types found are grey matter and white matter.ells of nervous tissue. Nervous tissue is the main component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.
(April 2012). A (geographical) meridian (or line of longitude) is the half of an imaginary great circle on the Earth's surface, terminated by the North Pole and the South Pole, connecting points of equal longitude. The position of a point along the meridian is given by its latitude. Each meridian is perpendicular to all circles of latitude. Each is also the same length, being half of a great circle on the Earth's surface and therefore measuring 20,003.93 km (12,429.9 miles).
Quick Answer. The prime meridian passes through the United Kingdom, France, Spain, Algeria, Mali, Burkina Faso, Ghana and Togo. The prime meridian represents the longitude of 0 degrees. The prime meridian was established as 0 degrees longitude in 1884 at an international conference. Prior to 1884, countries established their own local starting locations for longitude, but the increase of international commerce led to the need for a standardized prime meridian. The United Kingdom and its former colonies set the Royal Observatory at Greenwich, located outside of downtown London, as the starting location for longitude in 1675.