Buckmaster's Elements of animal physiology / by John Angell.

  • Angell, John
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: Buckmaster's Elements of animal physiology / by John Angell. Source: Wellcome Collection.

    343/384 (page 331)
    bloodvessels. It forms—i, ligaments; 2, tendons; 3, membranes, as the periosteiim, perichondrium^ the sclerotic coat of the eye, and the dura 7uater, which lines the skull. It is so tough that 1,000 lbs. force are required to rupture the tendon Achilles, even after death. It has very little vitality, but is readily re- paired ; when boiled in water it yields gelatine. Yellow Fibrous or Elastic Tissue consists of minute, cylindrical, yellowish, extensible, flexible, anq highly elastic fibres.^ It is nearly as elastic as india-rubber; is but slightly vascular or sensitive; is not acted upon by dilute acids ; and does not gelatine on boil- ing. The yellow fibres of which it is com- posed vary from —YellowFibrousTissue* i-io,000th inch to i-4,oooth inch in diameter ; when broken, by being stretched, the ends of the fibres curl up, giving them a peculiar and characteristic appearance. This tissue is found nearly pure in the ligamentum nuchcB of quadrupeds; in the ligaments at the back of the vertebral column, by which its power of flexion is increased •, in the vocal cords, and other ligaments of the larynx; also in the epiglottis. It forms the middle coat of the veins and arteries: a peculiar variety of it, having a flattened and perforated appearance, found in some of the arteries, is termed fenestrated membrane (from L., fenestra, a window). It sometimes forms homogeneous membrane, as in the inner layer of the cornea and the capsule of the ciystalline lens. Areolar Tissue (from L., area, an open space), or connective tissue, is the most widely diffused tissue in the body. It is a very flexible, extensible.