Chester Rows Chester Rows Chester Rows consist of covered walkways at the first floor behind which are entrances to shops and other premises. At street level is another set of shops and other premises, many of which are entered by going down a few steps. The Rows, found in each of the four main streets of the city of Chester, Cheshire, England, are unique. Dating from the medieval era, the Rows may have been built on top of rubble remaining from the ruins of Roman buildings, but their origin is still subject to speculation. In some places the continuity of the Rows
Whiskers these whiskers is not random: they form an ordered grid of arcs (columns) and rows, with shorter whiskers at the front and longer whiskers at the rear (see images). In the mouse, gerbil, hamster, rat, guinea pig, rabbit, and cat, each individual follicle is innervated by 100–200 primary afferent nerve cells. These cells serve an even larger number of mechanoreceptors of at least eight distinct types. Accordingly, even small deflections of the vibrissal hair can evoke a sensory response in the animal. Rats and mice typically have approximately 30 macrovibrissae on each side of the face, with whisker lengths up