Normal histology : a manual for students and practitioners / by John R. Wathen.

  • Wathen, John Roach, 1872-
Date:
[1905]
Catalogue details

Licence: In copyright

Credit: Normal histology : a manual for students and practitioners / by John R. Wathen. Source: Wellcome Collection.

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    THE OVUM. of the resulting daughter-cells three primary layers originate, namely, the ectoderm^ the mesoderm^ and the entoderm. Fig. 8. Fig. 9. Spindle, showing chromosomes, asters, and centrosomes. Showing four stages of nucleus. The normal tissues are classified into four groups—the epithelial, the connective, the muscxdar, and the nervous tissue. Fig. 10. Fig. 11. Resting nucleus and loose skein. Cell, showing four asters. Karyokinesis—indirect division of the cell. All the tissues of the body are derived from these three blastodermic layers, as follow: