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
Dark Is the Way, Light Is a Place "dabble with a more interesting, darker edge that borders on Circa Survive." At "Alternative Press", Evan Lucy rated the album four stars out of five, observing how the band ""allow Stephen Christian's strong lyricism and impassioned vocals to take center stage to deliver some of his finest performances yet." In addition, Lacy writes that "Dark Is The Way, Light Is A Place is largely proof that what Anberlin might now lack in immediate catchiness, they more than make up for in composure." At "Q", they rated the album four stars out of five, stating how "The grandstanding result sounds like