Why do lymph is known as extracellular fluid
Answers
Lymph, common name for the fluid carried
in the lymphatic system. Lymph is diluted blood plasma containing large numbers
of white blood cells, especially lymphocytes, and occasionally a few red blood
cells. Because of the number of living cells it contains, lymph is classified
as a fluid tissue.
Lymph diffuses into and is absorbed by the lymphatic
capillaries from the spaces between the various cells constituting the tissues.
In these spaces lymph is known as tissue fluid, plasma that has permeated the
blood capillary walls and surrounded the cells to bring them nutriment and to
remove their waste substances. The lymph contained in the lacteals of the small
intestine is known as chyle.
The synovial fluid that lubricates joints is almost
identical with lymph, as is the serous fluid found in the body and pleural
cavities. The fluid contained within the semicircular canals of the ear,
although known as endolymph, is not true lymph.