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.

    37/382 page 21
    2. Columnar (fig. 9).—This variety consists of cylindrical or club-shaped nucleated cells, the thick ends being towards the free surface. Their sides are often more or less flattened from mutual pressure or more or less irregular from the pre- sence of lymphoid cells situated between adjoining epithelial cells. The protoplasm of the cell is granu- lar from the presence of minute vacuoles \ it may also contain mucin and fatty globules. At times the outer ends of the cells are distended by mucus, forming the so-called * goblet' cells (fig. 10). There is always a nucleus containing a fine network. The free border of the cell is more refractile than the rest of the protoplasm of the cell, and is finely striated. Columnar cells are found lining the alimentary canal from the oesophageal end of the Fig. 10.—Goblet cells, highly magnified (Quain's Anatomy). The right- hand cell shows distinctly the intra-nuclear network, which radiates in the lower part of the cell, and also into the mucus-containing part. Stomach to the anus, lining the ducts of glands and the olfactory region of the nose. 3. Transitional.—This variety consists of flat- FiG. 9.—Columnar cells from the rabbit's intestine (Quain's Anatomy), a, an irregular projec- tion ; «, nucleus with its network ; str, the fine striated border; a fat-glo- bule is visible in the left hand cell.
    digitised image 1
    digitised image 2
    digitised image 3