Notes on physiology / by Henry Ashby.

  • Henry Ashby
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: Notes on physiology / by Henry Ashby. Source: Wellcome Collection.

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    They may be divided into the following classes :— I. Inorganic Compounds. II. Organic Crystalline Salts, or the Urea Group. III. Carbo-hydrates, or Sugars. IV. Hydro-carbons, or Fats and their Allies. V. Albuminous, or Proteid Compounds. VI. Albuminoid, or Gelatinous Compounds. I. The Inorganic Compounds include water, acids, bases, and salts. Water, H2O, forms about 70 per cent, of the whole body ; it is one of the chief constituents of the juices and tissues, and is a general solvent, by means of which various materials may be taken in as food, or excreted from the body. The various organs or hquids contain variable quantities; thus, enamel contains 2 per cent; saliva, 99-5 per cent. Acids consist of— Hydrochloric, which exists free in the gastric juice and in combination with bases in all the tissues and fluids. Carbonic, with bases in blood, teeth, and bones. Phosphoric, in combination with bases, in the bones, teeth, corpuscles, brain, &c. Sulphuric, with bases, in blood, serum, and secretions. Hydrofluoric, with bases, in bones and teeth. Silicic, with bases in hair, epidermis. Bases— Sodium in all tissues and fluids. Potassium, in the muscles, red blood corpuscles, nervous tissues, secretions. Ammonium, sparely in the gastric juice, urine, saliva.
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