498 LABORATORY MANUAL OF HUMAN ANATOMY 



faces and trace these upon the stomach. Some filaments will 

 have been destroyed in the earlier dissections. 



In connection with the abdominal part of the vagus nerve 

 (N. vagus) study 



(a) Gastric branches (rami gastrici). 



(b) Anterior gastric plexus (plexus gastricus anterior). 



(c) Posterior gastric plexus (plexus gastricus posterior). 



(d) Hepatic branches (rami hepatici). 



(e) Coeliac branches (rami coeliaci). 



(ea) Splenic branches (rami lienales). 



(eb) Renal branches (rami renales). 



Stomach (Ventriculus). (Vide Spalteholz, Figs. 557-560.) 



Pass two ligatures about the abdominal portion of the 

 oesophagus, cut between, and remove the stomach. Use models 

 to determine its exact form, position, relations, etc. What is the 

 direction of the axis of this organ? Note that the upper two- 

 thirds is vertical, while the lower one-third passes to the right, 

 upward and slightly backward. These two parts make an angle 

 with each other which varies between 60 and 70. For a full 

 discussion concerning the exact position of these two parts, con- 

 sult the systematic text-books. 

 Examine 



(a) Anterior wall (paries anterior). 



(b) Posterior wall (paries posterior). 



(c) Greater curvature of stomach (curvatura ventriculi major). 



(d) Lesser curvature of stomach (curvatura ventriculi minor). 



(e) Cardia (cardia). 



(f) Fundus of stomach (fundus ventriculi). 



(g) Body of stomach (corpus ventriculi). 

 (h) Pylorus (pylorus). 



(i) Cardiac part (pars cardiaca). 

 (j) Pyloric part (pars pylorica). 

 (k) Cardiac antrum (antrum cardiacum). This is only occasionally 



present. 

 (I) Pyloric antrum (antrum pyloricum). 



How much of the stomach is to the left of the median plane T 

 How much to the right ? What is the relation of the cardia to the 

 sternal extremity of the seventh costal cartilage on the left side ? 

 What is the relation of the pylorus to the median plane and to 

 the umbilicus? Draw a line uniting the medial extremities of 

 the ninth costal cartilages. What is the position of the pylorus 

 in relation to this line? What is the position of the greater 

 curvature? Does it vary? The relation of the stomach to each 



