. Elementary anatomy and physiology : for colleges, academies, and other schools. Anatomy; Physiology. AND PHYSIOLOGY. 413 762 a. Use of the Bones. —Use of the Cartilages, and the Glands in Integuments.—The bones are the two nasal, which give form to the base of the nose, and fur- nish a firm attachment to the muscles. The cartilage is of use to give form to the nose, wThile its elasticity lessens the effects of injuries. The integument or skin is quite thick upon this organ, and aids the cartilage in giving form to it. It contains in its substance small glands, which secrete an oil j matter t
. Elementary anatomy and physiology : for colleges, academies, and other schools. Anatomy; Physiology. AND PHYSIOLOGY. 413 762 a. Use of the Bones. —Use of the Cartilages, and the Glands in Integuments.—The bones are the two nasal, which give form to the base of the nose, and fur- nish a firm attachment to the muscles. The cartilage is of use to give form to the nose, wThile its elasticity lessens the effects of injuries. The integument or skin is quite thick upon this organ, and aids the cartilage in giving form to it. It contains in its substance small glands, which secrete an oil j matter to protect the nose from extremes of weather. These glands are liable to retain dust and other impurities in their orifices, forming the black specks on the nose. 763. Lined with Mucous Membrane—The whole cav- ity of the nostrils is lined with mucous membrane, which is continuous writh the lining membrane of the fauce3 or throat, with which the nostrils are in communication. as possible for the expan- A Vertical Section of the Middle Part of the Nasal Fossae, giving a Posterior View of the Arrangement of the Ethmoidal Cells, etc. 1, Anterior Fossae of the Cranium. 2, The same covered by the Dura Mater. 8, The Dura Mater turned up. 4, The Crista Galli of the Ethmoid Bone. 5, Its Cribriform Plate. 6, Its Nasal Lamella. 7, The Middle Spongy Bones. 8, The Ethmoidal Cells. 9, The Os Planum. 10, Inferior Spongy Bone. 11, The Vomer. 12, Superior Maxillary Bone. 13, Its Union with the Ethmoid. 14, Anterior Parietes of the Antrum Highmorianum, covered by its Membrane. 15, Its Fibrous Layer 16, Its Mucous Membrane. 17, Palatine Process of the Superior Maxil- lary Bone. 18, Roof of the Mouth, covered by the Mucous Membrane. 19, Section of this Membrane. A Bristle is seen in the Orifice of the Antrum Highmorianum. 762 a. State the use of bone and cartilage in the composition of the nose. Of what ser- vice are the little glands in its skin ? 763. What are the nostrils lined with? 764.
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