. Pathological technique; a practical manual for workers in pathological histology and bacteriology. y the cord. It isnot a bad practice to remove the calvarium, to examine themeninges over the upper surface of the cerebrum, and thento make the examination of the body before removing thebrain. In this way any change in the blood-supply of thecerebral vessels would be observed. POST-MOR TEM EXAMINA TIONS. 483 Opening of the Abdominal Cavity.—In the exam-ination of the body the peritoneal cavity is opened first, thetwo pleural cavities next, and the pericardial cavity last. Thecavities and their
. Pathological technique; a practical manual for workers in pathological histology and bacteriology. y the cord. It isnot a bad practice to remove the calvarium, to examine themeninges over the upper surface of the cerebrum, and thento make the examination of the body before removing thebrain. In this way any change in the blood-supply of thecerebral vessels would be observed. POST-MOR TEM EXAMINA TIONS. 483 Opening of the Abdominal Cavity.—In the exam-ination of the body the peritoneal cavity is opened first, thetwo pleural cavities next, and the pericardial cavity last. Thecavities and their contents are to be inspected in the orderand at the time that each is opened, but the organs are tobe removed from the cavities for further examination in thereverse order, beginning with the heart. The primary or long anterior incision to bare the thorax andto open the abdomen (Fig. 158) should extend from the larynxto the pubes, passing to the left of the umbilicus, so as notto cut the round ligament. In cutting, the handle of theknife is depressed so as to use the belly of the blade rather. Fig. 158.—Primary incision in the body (Nauwerck). than the point. An incision beginning as high as the chinis, unfortunately, rarely allowable. Over the sternum thecut should extend down to the bone; over the abdomen,however, only into the muscles, or in fat people through the 4&4 PATHOLOGICAL TECHNIQUE. muscles into the subperitoneal fat-tissue. To open the ab-dominal cavity, nick carefully through the peritoneum justbelow the sternum, introduce the first and second fingers ofthe left hand, and while making strong upward and outwardtraction on the right abdominal flap extend the incision tothe pubes. Some operators prefer to separate the fingersand to cut between them. The abdominal flaps are rendered much less tense by cut-ting the pyramidales and recti muscles from below just abovethe pubis. Care must be taken not to injure the overlyingskin. The abdominal cavity can now be exami
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