Volume 2

Physiology for practical use / by various writers ; edited by James Hinton.

Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: Physiology for practical use / by various writers ; edited by James Hinton. Source: Wellcome Collection.

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    pound, denoting an increased flow; and it is probable that none of the mucous membranes are exempt from its occurrence from some cause or other. Cold in the bead is by far the most frequent result of taking cold, regarded in a general sense. It may be well to describe briefly the symptoms of this com- mon disorder; but it is desirable first to explain the nature of the parts affected. The interior of the nose consists of a cavity separated into two equal parts by a thin partition of bone, which passes from before backwards, and which is continuous with the fleshy part of the partition seen at the entrance to the nostrils. Attached to the outer wall of each cavity are three thin convoluted pieces of bone, ar- ranged one above the other, and also extending from before backwards. All these bones are covered by mucous membrane, and one use of the convolutions is to increase the surface exposed to the air, so that the odoriferous particles or vapours may thus affect the nerves of smell, which are distributed over the membrane. Now these cavities of the nose, besides other connections, communicate with the mouth and throat behind, and above with certain cavities in the front of the skull, which act as sounding-boards in giving clearness to the voice; and these cavities are also lined with mucous membrane.
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