This is BTEC level 3 Applied science unit 8 assignment B , lymphatic system. The assignment is written to distinction standards and I was given a DISTINCTION for this assignment in unit 8 and was sampled by Pearson. This assignment goes through each criteria in much detail. I hope you find my assi...
The lymphatic system is a system of vessels that drains intestinal fluid (tissue fluid) back into the
major veins along with a few protein molecules. This system is also referred to as a network of
tissues and organs that helps the body get rid of waste and toxins.
The lymphatic system
spreads widely across the
entire body and is made
up of many different parts,
those parts consist of the
lymph vessels, lymph
nodes, valves, thymus
gland, tonsils, lacteals,
and the
spleen. The lymph vessels
are thin-walled and valved,
they are with endothelial
cells and consists of
a smooth, thin muscle wall
and the outer wall binds
,the vessels to tissue that
surrounds it. The
endothelial is simple
squamous epithelium,
which has a highly
permeable membrane, it
also has
junctions where the
endothelial cells over-lap
each other on these
vessels in order to allow
lymph in
but not out. The smooth
muscles bellow them are
in a circular fashion and
allows for the lymph to be
pumped slowly around the
body, and is involved with
,vasoconstriction and
vasodilation,
vasoconstriction increases
blood pressure and
vasodilation is the dilation
of blood vessels, which
decreases blood pressure.
The outer layer is known
as the adventitia and
made out of collagen
mostly and mainly acts to
hold the lymph vessels
stable within the body, but
not all vessels contain
the adventitia. Much like
the vessels that transport
blood around the body in
the circulatory system,
, the lymph vessels
transport lymph around
the body, it carries it from
the tissue through the
lymph
nodes and delivers
cleaned fluids back to the
blood. The lymph travels
through the vessels due to
smooth muscles, valves,
and compression when the
adjacent skeletal muscle
and arterial pulsation
compresses.
The lymphatic system
spreads widely across the
entire body and is made
up of many different parts,
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