Mydriasis iris sphincter, composed of circularly arranged muscle fibers, and the iris dilator, composed of radially arranged muscle fibers. The sphincter is innervated by (signaled by nerves of) the parasympathetic nervous system, and the dilator by the sympathetic nervous system. Sympathetic stimulation of the adrenergic receptors causes the contraction of the radial muscle and subsequent dilation of the pupil. Conversely, parasympathetic stimulation causes contraction of the circular muscle and constriction of the pupil. The mechanism of mydriasis depends on the agent being used. It usually involves either a disruption of the parasympathetic nerve supply to the eye (which normally constricts the
What Is a Man Without a Moustache? 62 based on five reviews from critics. In a review for "Variety" magazine, critic Deborah Young called "What Is a Man Without a Moustache?" "an entertaining romantic comedy" and a "good-humored film" while, on the other hand, noting that the film should be better received by local and regional audiences due to its story being "a hard sell abroad". Author and film critic Michael Atkinson, writing for "The Village Voice", expressed his divided opinion that the film "is not remarkable or ingenious" but that it still is "adept enough for a pass on." Critic Nathan Lee of "The New York