Diaphragm
an inspiratory muscle, and the sole agent in tranquil respiration.
It is the muscular septum between the thorax and abdomen, and is composed of two portions, a greater muscle arising from the ensiform cartilage, and a lesser DIARRHEA arising from the bodies of the lumbar vertebræ by two tendons. There are three openings in the diaphragm, one for the passage of the inferior vena cava, one for the passage of the œsophagus and pneumo-gastric nerves and the aortic, through which passes the aorta, the right vena azygos, and thoracic duct. It assists the abdominal muscles, which are expiratory, powerfully in expulsion, each act of that kind being accompanied or preceded by a deep inspiration.
In optics, an annular disk in a camera or telescope or other optical instrument, to exclude some of the marginal marginal rays of a beam of light.
DIARBEKIR (dē-ar-be-kēr'), a town of Asiatic Turkey, capital of a province of the same name; situated on the right bank of the Tigris; 390 miles N. W. of Bagdad. The town is surrounded by high strong walls, and commanded by a citadel built on a high basalt rock, against which the flat-roofed houses rise above each other in terraces. The population has dwindled to 40,000, mostly Kurds and Armenians. The city is the residence of a pasha, and the seat of a Greek bishop, as also usually of the Jacobite patriarch of Antioch.