By Shu-xin Zhang M.D., Ph.D. (auth.)
The starting scholar of histology is often faced by way of a paradox: diagrams in lots of books that illustrate human microanatomy in a simplified, cartoon-like demeanour are effortless to appreciate, yet are tough to narrate to real tissue specimens or images. In flip, images usually fail to teach a few very important positive aspects of a given tissue, simply because no person specimen can exhibit all the tissue's salient fea tures both good. This atlas, full of photo-realistic drawings, was once ready to aid bridge the distance among the simplicity of diagrams and the extra advanced actual ity of microstructure. all the figures during this atlas have been drawn from histological arrangements utilized by scholars in my histology periods, on the point of sunshine microscopy. every one drawing isn't easily an outline of a person histological part, yet can be a synthesis of the major constructions and lines visible in lots of arrangements of comparable tissues or organs. The illustrations are consultant of the common positive aspects of every tissue and organ. The atlas serves as a compendium of the elemental morphological features of human tissue which scholars can be in a position to recognize.
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Extra resources for An Atlas of Histology
10-20), glands in the tracheal wall (see Fig. 9-8), and some small glands in the tongue (see Fig. 10-14) and in the epiglottis (see Fig. 9-4) are classified as mixed glands. The secretion of the mixed glands is composed of a mixture of serous and mucous fluids. Fig. 1-14. Figure 1-14. Glandular Epithelium (I) 17 Glandular Epithelium Human. E. stain. High magnification Intercalated ducts Glandular (acinar) cells ~_--L-. --t:"--'----;-_ _~ Adipose cell - - - Excretory duct /1 I' - - - Striated duct j A.
1) Zone of resting cells. This zone consists of ordinary hyaline cartilage in which chondrocytes are not active. (2) Zone of cell proliferation. Chondrocytes undergo proliferation and are arranged in columns parallel with one another and with the long axis of the bone. (3) Zone of cell maturation. The cell division has ceased, and hypertrophic chondrocytes enlarge in size owing to accumulating glycogen and lipid in their cytoplasm. They can no longer divide. (4) Zone of cell hypertrophy and calcification.
They have a small shrunken nucleus and cytoplasm filled with lipid droplets so that the appearance of a secretory cell is somewhat similar to that of an adipose cell. The secretory cells finally die and break down, forming a fatty secretion, the sebum, which lubricates skin and hair (see Fig. 15-9). The intraepithelial gland (Fig. 1-15D) is a group of glandular cells that are present in respiratory (see Fig. 9-2) and urethral epithelia (see Fig. 11-12). This drawing shows the intraepithelial gland situated within the ciliated pseudo stratified columnar epithelium.