Hand-book of physiology / by W. Morrant Baker and Vincent Dormer Harris.

Date:
1888
Catalogue details

Licence: Public Domain Mark

Credit: Hand-book of physiology / by W. Morrant Baker and Vincent Dormer Harris. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    64/910 (page 40)
    are rounded, and in the jelly of the enamel organ are stellate, imbedded in a soft jelly-like inter-cellular substance which forms the bulk of the tissue, and which contains a considerable Fig. 37.—Tissue of the jelly of Wharton from umbilical cord, a, connective-tissue cor- puscles ; h, fasciculi of connective tissue; c, spherical formative cells. (Frey.) patches and in the solitary glands mucous membranes generally. quantity of mucin. In the umbilical cord, that part of the jelly immediately surround- ing the stellate cells shows marks of obscure fibrillation (% 37)- (b.) Adenoid orRetiform. Distribution.—It composes the stroma of the spleen and lymphatic glands, and is found also in the thymus, in the tonsils, ill the follicular glands of the tongue, in Peyer’s of the intestines, and in the Fig. 38.—Part of a section of a lymphatic yland, from which the corpuscles have been for the most part removed, showing the adenoid reti- culum. (Klein and Noble Smith.) Structure. — Adenoid or retiform tissue consists of a very delicate network of minute fibrils, formed ori- ginally by the union of pro- cesses of branched connec- tive-tissue corpuscles the nuclei of which, however, are visible only during the early periods of develop- ment of the tissue (fig. 38). The nuclei found on the fibrillar mesliwork do not form an essential part of it. The fibrils are neither white fibres nor elastic tissue, as they are insoluble in boiling water, although readily soluble in hot alkaline solu- tions. The lymphoid cor- puscles found in the interstices of the tissue are small round cells, the protoplasm of which is practically occupied by their.spherical nuclei.