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.
An emperor (through Old French empereor from Latin : 'imperator') is a monarch, usually the sovereign ruler of an empire or another type of imperial realm.Empress, the female equivalent, may indicate an emperor's wife (empress consort), mother (empress dowager), or a woman who rules in her own right (empress regnant).oth kings and emperors are monarchs, but emperor and empress are considered the higher monarchical titles. In so far as there is a strict definition of emperor, it is that an emperor has no relations implying the superiority of any other ruler, and typically rules over more than one nation.