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
What Is to Be Done? (novel) The "Dame in mourning" appearing at the end of the novel is Olga S. Chernyshevskaya, the author's wife. Characters with the last name "Kirsanov" also appear in Ivan Turgenev's "Fathers and Sons". Dostoyevsky argues with Chernyshevsky's ideas in "Notes from Underground". In particular, he responds negatively to Chernyshevsky's idealization of The Crystal Palace, a theme which is referenced throughout Russian literature. American playwright Tony Kushner referenced the book multiple times in his play "Slavs!". The main character of Gide's "Les caves du Vatican" (En. "Lafcadio's Adventures"), Lafcadio, resembles Rakhmetov. In the book "", author Chris Matthew Sciabarra claims that "What