Microcirculation
is one of the basic characteristics of life, is constantly in the body with the
surrounding environment, energy and information transfer. Single-celled
organisms can be passed through the cell membrane the activity, but evolution to
mammals phase (such as), only lung and stomach respectively through the trachea
and esophagus and external environment of substance, energy, information
transfer, the location of the other tissues and organs, function, metabolism is
standardized, the organization of the organs, cells, and can not directly
communicate with the external environment, only through the tissue fluid, blood,
lymphatic fluid material, energy and information transfer. Microcirculation is
directly involved in the organization, cells of material, energy, information
transfer of blood and lymph flow.
Compared to microcirculation and general circulation,
has the following four notable features:
Microcirculation on the properties is not only the
most peripheral part of the circulatory system, is an important component of the
viscera. Capillaries, capillary lymphatic vessels are the peripheral part of the
circulatory system, belongs to the circulatory system. Many viscera essence of
cells, tissues and fine arteries, capillaries and small veins and capillary
lymphatic vessels organically unifies in together, form with microvascular as
the important support stereo structure, so it is an important component of the
viscera.
Microcirculation in form has the commonness of
vascular, and viscera of features:
Capillaries, capillary lymphatic vessels in the form
of a tubular cavity, and facilitate the flow of blood and lymph. But the
microvascular morphology and structure have different characteristics in various
organs, such as small intestinal villus, the arrangement of alveolar, liver and
bone marrow capillaries, morphology and structure are not completely the same.
And even different parts of the same organs, such as lymph nodes, viscera of
medulla of the body parts of the microvascular morphology each has its
characteristics.
Microcirculation is circulation channel on the
function, the material exchange places:
Microvascular is the way of circulation, the whole
body circulation of blood, except the part through the arteries and veins short
circuit branch, almost all through the capillaries, perfusion tissue and cell.
Flow of tissue fluid exists in tissue and cell gap, between cells, capillary
lymphatic vessels and capillaries, capillary lymphatic vessels is one of the
important output channel of cells and tissues. Therefore microcirculation is
cell, tissue and blood, lymphatic fluid substance exchange places.
Microcirculation has both blood vessels and lymphatic
vessels, organizing clearance common properties of metabolism, and show some
characteristics of their viscera essence cell metabolism.
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