In anatomical terms, an afferent is a vessel or other conduit that brings substances towards a central area, which is often a major organ like the brain or the heart. It is the opposite of an efferent vessel, which carries substances away from these central locations.
The system of imperial units or the imperial system (also known as British Imperial) is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced.
Imperial is a city in Imperial County, California. Imperial is located 4 miles (6.4 km) north of El Centro. As of the 2010 census, the city had a population of 14,758. It is part of the El Centro metropolitan area. Nearby recreation facilities transform the desert into a popular Valley tourist destination due to availability of activities. Three year-round golf courses are within minutes of Imperial. The sand dunes provide a place for campers and dune buggy enthusiasts. This region is well known for its abundance of bird species such as dove, quail, ducks, pheasant and geese.