LYMPH and LYMPH FORMATION . Lyingclose to the
See also:blood-vessels of a
See also:limb or
See also:organ a further set of vessels may be observed . They are very
See also:pale in
See also:colour, often almost trans-
See also:parent and very thin-walled . Hence they are frequently difficult to find and dissect . These are the lymphatic vessels, and they are found to be returning a fluid from the tissues to the blood-stream . When traced back to the tissues they are seen to
See also:divide and ultimately to
See also:form minute anastomosing tubules, the lymph capillaries . The capillaries finally terminate in the spaces between the structures of the tissue, but whether their
See also:free ends are closed or are in open communication with the tissue spaces is still undecided . The study of their development shows that they grow into the tissue as a closed
See also:system of minute tubes, which indicates that in all probability they remain permanently closed . If we trace the lymphatic vessels towards the thorax we find that in some
See also:part of their course they terminate in structures known as lymphatic glands . From these again fresh lymphatic vessels arise which carry the fluid towards the
See also:main lymph-vessel, the thoracic duct . This runs up the posterior
See also:wall of the thorax close to the aorta, and finally opens into the junction of the
See also:internal jugular and
See also:left subclavian
See also:veins .
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