Tri-State medical journal and practitioner . ntrast with that which lines the fossae. * This illustration only shows the two turbinated bodies; the third, however, lies just above the middle.+ Any further anatomy on the bones of the nasal fossae required to elucidate the contents of thismemoir can be found in any work on anatomy. 154 Original Articles. The character of the epithelium varies in the different parts, and bythis, in a general way, three regions of the nasal fossae may be the region of the external nostrils (the vestibule) is lined with strati-fied squamous epith
Tri-State medical journal and practitioner . ntrast with that which lines the fossae. * This illustration only shows the two turbinated bodies; the third, however, lies just above the middle.+ Any further anatomy on the bones of the nasal fossae required to elucidate the contents of thismemoir can be found in any work on anatomy. 154 Original Articles. The character of the epithelium varies in the different parts, and bythis, in a general way, three regions of the nasal fossae may be the region of the external nostrils (the vestibule) is lined with strati-fied squamous epithelium; and the remainder is divisible into two parts,viz., the upper or olfactory region, in which the epithelium is now ciliatedand columnar; and the lower or respiratory region, in which, as also in thesinuses, it is ciliated and columnar. The membrane in the respiratorypart covers the middle and inferior turbinals, and all the lower portions ofthe fossae, and is studded with racemose glands, which open by orificesapparent on the Fig. II. The olfactory mucous membrane, which lines the olfactory region orthat in which the olfactory nerve is distributed, includes in man only theuppermost part of the fossae. It is extremely vascular, its mucous mem-brane is covered by a very thick non-ciliated epithelium, and it is moredelicate in consistence than that of the ciliated region, being indeed softand pulpy. It is of a yellow color and extends beyond the olfactory are numerous glands in that region, known as Bowmans. Theyopen by fine ducts, which extend to the surface between the olfactoryepithelium cells. In the mucous membrane itself the gland-tube is some-what convoluted and enlarged, and it may have one or two branches. It islimited throughout by a basement membrane, and lined and almost filledwith columnar or polyhedral secreting cells. These are of serous type inman. These gland-cells secrete a yellowish brown pigment. In man thegland-ducts frequently open
Size: 1955px × 1278px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublish, booksubjectmedicine
