Iris dilator muscle "musculus dilator pupillae", The "Nomina Anatomica" as authorized in 1895 in Basle and in 1935 in Jena used the full Latin expression. Iris dilator muscle The iris dilator muscle (pupil dilator muscle, pupillary dilator, radial muscle of iris, radiating fibers), is a smooth muscle of the eye, running radially in the iris and therefore fit as a dilator. The pupillary dilator consists of a spokelike arrangement of modified contractile cells called myoepithelial cells. These cells are stimulated by the sympathetic nervous system. When stimulated, the cells contract, widening the pupil and allowing for more light to pass through the eye.
There Is a Light That Never Goes Out the band's "comeback" record. However, Johnny Marr was insistent that "Bigmouth Strikes Again" be the band's next single. Despite Travis's advocation of the song, Simon Goddard expressed doubt that the song's "explicit glamorisation of suicide" would have endeared it to daytime radio. Regardless, "There Is a Light That Never Goes Out" became the second Smiths song to top BBC Radio One disc jockey John Peel's Festive Fifty poll in his 1986 tally. The song was shortly thereafter included on the 1987 compilation album "The World Won't Listen". In October 1992, "There Is a Light That Never Goes Out" finally received