. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. by a thin sheet of areolar tissue ; the fibres are either round or flat- tened, brittle,and disposed to curl at the end. (Fig. 4.) It is found in the middle coat of the arteries, in the '^" * chordae vocales, the ligamentum nuchas, the liga- menta subflava, in the crico-thyroid membrane, and in the longitudinal bands of the trachea and its branches. It undergoes little or no change by boil- ing, and is unaffecte
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. by a thin sheet of areolar tissue ; the fibres are either round or flat- tened, brittle,and disposed to curl at the end. (Fig. 4.) It is found in the middle coat of the arteries, in the '^" * chordae vocales, the ligamentum nuchas, the liga- menta subflava, in the crico-thyroid membrane, and in the longitudinal bands of the trachea and its branches. It undergoes little or no change by boil- ing, and is unaffected by acetic acid; it resists putrefaction, and preserves its elasticity during a long period. Both these varieties may be detected in the tissue now generally designated as areolar^ formerly cellu- lar. This is formed by the crossing and interlacing of minute fibres and bands interwoven in every di- rection, so as to leave innumerable interstices which communicate with each other: this may be proved by filling them with air or water, as occasionally happens in the living body in anasarca and traumatic emphysema. (Fig. 5.) These interstices are not cavities possessed of definite limits, be- cause they are open on all sides. The application of the term cell to them, is, therefore, inappropriate. The term cellular is more applicable to those tissues which consist of a congeries of distinct cells. The areolar tissue is one of the most extensively difTused of all the ele- ments of organization, being found in every part of the fabric, except in the compact portion of bone, teeth, and cartilage. It does not exist in the brain either, except around the minute vessels. Its great use is to connect together organs, and parts of organs whicli require a certain degree of motion upon each other. To do this, it is placed in their interstices, and is more or less lax, and more or less abundant, according to the par- ticular exigency of the part. It has scarcely any vital properties, but posse
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