. Radiography, X-ray therapeutics and radium therapy . Spine Diaphragm Fig. 160. — Diagrammatic repre-sentation of the lateral view ofthorax. The Subdivisions of the Stomach.—The oesophagus enters the stomachvery obliquely, the acute angle itforms being called the incisura cardiaca. The cardiac orifice, though notsurrounded by a definite sphincter, has a much smaller diameter than thelower extremity of the oesophagus, as great a period being consequently requiredfor the passage of a mouthful of food through the cardia as for its passagedown the whole length of the oesophagus. The stomach can b
. Radiography, X-ray therapeutics and radium therapy . Spine Diaphragm Fig. 160. — Diagrammatic repre-sentation of the lateral view ofthorax. The Subdivisions of the Stomach.—The oesophagus enters the stomachvery obliquely, the acute angle itforms being called the incisura cardiaca. The cardiac orifice, though notsurrounded by a definite sphincter, has a much smaller diameter than thelower extremity of the oesophagus, as great a period being consequently requiredfor the passage of a mouthful of food through the cardia as for its passagedown the whole length of the oesophagus. The stomach can be divided into a larger cardiac part and a smaller pyloric part. The cardiac part consists of the fundusand body, the fundus being the segment ofthe stomach which lies above a horizontal. Fig. 161.—The appearances seen onthe fluorescent screen after thepatient has taken bismuth foodare shown diagrammatically. Theshadows represent the passage ofa number of mouthfuls of fooddown the oesophagus; when alarge quantity is swallowed insuccessive acts of deglutition, acontinuous line of dark shadow isseen. This may be seen to varyin diameter, corresponding willithe contractile movements of theoesophagus.
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