Iris dilator muscle 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. It is innervated by the sympathetic system, which acts by releasing noradrenaline, which acts on α1-receptors. Thus, when presented with a threatening
Look at What the Light Did Now earthy, quirky additions". "Look at What the Light Did Now" won the 'DVD of the Year' prize at the 2012 Juno Awards in Canada, and was nominated for the Sound & Vision Award at CPH:DOX in Denmark. Feature Length Documentary Music videos Live Performances from The Reminder Tour 2007-2009 Tracks 9-12: Chilly Gonzales Original Score - Songs from The Reminder improvised and performed on solo piano. Total running time: 58:43 Look at What the Light Did Now Look at What the Light Did Now is a documentary/live album DVD/CD by Canadian indie pop artist Feist, first released in December 2010.