A text-book of dental histology and embryology, including laboratory directions . Epithe-lium Tunica propria Lymph nodule Oblique section j of duct— of mucous gland Musclefibres cut P ? -, trans-versely uUar(T,CZ Section through a lingual follicle in man: x, crypt. (50 X) (Szymonowicz.) The Lingual Tonsils.—These are situated in the base ofthe tongue between the circumvallate papillae and theepiglottis. They are rounded masses of adenoid tissuecomposed of solitary follicles lying mostly in the tunicapropria, and causing projections of the surface that areeasily seen. In the centre of each mass
A text-book of dental histology and embryology, including laboratory directions . Epithe-lium Tunica propria Lymph nodule Oblique section j of duct— of mucous gland Musclefibres cut P ? -, trans-versely uUar(T,CZ Section through a lingual follicle in man: x, crypt. (50 X) (Szymonowicz.) The Lingual Tonsils.—These are situated in the base ofthe tongue between the circumvallate papillae and theepiglottis. They are rounded masses of adenoid tissuecomposed of solitary follicles lying mostly in the tunicapropria, and causing projections of the surface that areeasily seen. In the centre of each mass is a deep depressionforming a blind pouch, known as the crypt (Fig. 256). Thisis lined with stratified squamous epithelium like that of theadjoining mucous membrane except that at various places THE TONSIL 333 the lymphocytes have pushed their way through theepithelial cells, and escape on the surface. Epithelium /of pharynx~—/-,: / Fig. 257Epithelium of crypt X \ Follicle. Blood vesselI
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectteeth, bookyear1912
