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CHAPTER III. THE LYMPHATIC VESSELS OF THE SEROUS MEMBRANES. a.
Lymphatics of the Omentum and the Pleura Mediastini. In the
rabbit's omentum the lymphatics are easily demonstrated. Following
the above-mentioned method, it is necessary only to pencil in situ
the surface of the fresh omenlum and then to stain it in silver.
Different portions of the omentum are differently circumstanced as
regards lymphatics. In the neighbourhood of the greater curvature
of the stomach, and in the portion of omentum covering its pyloric
end, there occurs a rich network of lymphatics: they are related to
the large blood-vessels in such a way that a group of the latter
has a lymphatic running along both sides and communicating with one
another by transverse and oblique lateral branches. The lymphatics
are also distributed independently of large blood-vessels, chiefly
between and around the lymphatic patches which, as mentioned above,
are met with in great abundance in this part (the pylorus and
greater curvature). Concerning their structure, there is little to
add to what is already known. They are wide vessels, the walls of
which consist only of one layer of endothelial plates; the latter,
in the large lymphatics accompanying the blood-vessels, being of a
short spindle shape, almost sinuous. These possess also valves and
sacculated dilatations corresponding to them, and are to be
considered as the main lymphatic trunks. The other class, running
apart in the tissue, are not different in calibre, and have also a
sinuous endothelium; but they are either without valves or have
them only in a very few places, while they are provided with
sinus-like dilatations springing from their sides. These are to be
considered as the lymphatic capillaries. In the portion of omentum
covering the ant...
General Books LLC
|Country of origin:
Edward Emanuel Klein
||246 x 189 x 2mm (L x W x T)
||Paperback - Trade
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