Page 609 - Atlas of Histology with Functional Correlations
P. 609
spaced farther apart than in the colon. Diffuse lymphatic tissue (6) in the lamina
propria (3) is abundant and often in the submucosa (8).
Lymphatic nodules (4, 9) with germinal centers are highly characteristic of
the appendix. These nodules originate in the lamina propria (3) and may extend
to the submucosa (8).
The submucosa (8) has numerous blood vessels (11). The muscularis externa
(7) consists of the inner circular layer (7a) and the outer longitudinal layer (7b).
The parasympathetic ganglia (12) of the myenteric plexus (12) are located
between the inner (7a) and outer (7b) smooth muscle layers of the muscularis
externa.
The outermost layer of the appendix is the serosa (10) under which are seen
adipose cells (13).
FIGURE 15.14 ■ Appendix (panoramic view, transverse section). Stain:
hematoxylin and eosin. Low magnification.
Figure 15.15 | Rectum (Panoramic View,
Transverse Section)
608
