SECTION OF HUMAN SPLEEN. 



175 



tion. (b) Their irregular course, quickly after leaving the sur- 

 face, (c) That occasionally a small artery may be found within 

 them, though they are usually destitute of large vessels, (d] The 

 elongate nuclei of the muscular fibre largely forming the trabeculae. 

 3, The large blood-vessels, (a) The arteries more frequent 





FIG. 116. SECTION OF THE SPLEEN. X 60. 



A. Elastic portion of the capsule. 



B. Lymph spaces of last. 



C. Involuntary muscular portion of capsule. 



D. Deeply pigmented portions of capsule. 

 K, E. Trabeculse from C. 



F. Trabeculae in oblique section. 



G, G. The spleen pulp. 



H, H. Large arteries in T. S. 



I. Arteries in L. S. 



J. Adenoid nodule, not connected with an artery. 



K. A.denoid nodule. Malpighian body along course of artery. 



L. Adenoid nodule in T. S. 



M. Vein. 



than veins. (&) Their very prominent adventitia. (c) Their tor- 

 tuous course. 



4. The adenoid tissue. (This you will be enabled to recognize 

 by the great number of lymphoid cells of the adenoid structure, the 

 nuclei of which become stained very deeply blue with haema., giving 



