2.03
Remember the
structures
of the
lymphatic system
2.03 Remember the structures of
the lymphatic system
What are the structures of the
lymphatic system?
2.03 Remember the stuctures of the
lymphatic system
2
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
Lymph
fluid
Lymph
fluid
3
Lymph
glands
Lymph
glands
Lymph
vessels
Lymph
vessels
Lymph
nodes
Lymph
nodes
Structures of the lymphatic system
4
Lymph fluid
(aka:interstitial fluid)
•
Clear, straw-colored
(resembles plasma)
•
Fills spaces between tissues
•
Carries digested food,
oxygen and hormones to the
cells.
•
Carries waste away from
the cells (carbon dioxide and
urea)
2.03 Remember the stuctures of the
lymphatic system
Structures of the lymphatic system
5
*
Lymph vessels
•
*
Closely parallel
the blood vessels
(veins)
•
transport lymph
2.03 Remember the stuctures of the
lymphatic system
Structures of the lymphatic system
6
*
Lymph vessels closely parallel the veins
2.03 Remember the stuctures of the
lymphatic system
Structures of the lymphatic system
7
Lymph vessels
•
Lacteals
•
Specialized
lymph
vessels in
the small
intestines
2.03 Remember the stuctures of the
lymphatic system
Structures of the lymphatic system
8
Lymph vessels
•
Lymphatic ducts
•
Large lymph vessels
•
*
Thoracic duct (the largest
lymphatic vessel)
•
*
Collects lymph from
the left chest, abdomen
and lower limbs
as
pictured
•
Right lymphatic duct
•
Lymph flows only in one
direction
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
9
*
Lymph
nodes
*
Lymph
nodes
•
tiny,
oval-shaped
structures
that
•
tiny,
oval-shaped
structures
that
range
in
size
from
a
pinhead
to
an
almond;
found
throughout
the
body
range
in
size
from
a
pinhead
to
an
almond;
found
throughout
the
body
Lymph node
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
10
Lymph nodes
•
Located throughout the
body; clusters are found
in the armpits and the
neck.
•
Why are there so
many?
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
11
Tonsils
•
3 pairs
•
masses of lymphatic
tissue
1.
Palatine tonsils
•
sides of throat
2.
Adenoids
•
upper throat
3.
Lingual tonsils
•
back of
tongue
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
12
Say “aahhh”
Why this is helpful?
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
13
*
Spleen
(
*
largest organ of the system)
•
Sac-like mass
•
*
Located in the LUQ,
below diaphragm
•
Filters blood, stores
large amounts of
RBC’s.
2.03 Remember the stuctures of the
lymphatic system
Thymus
gland
Thymus
gland
•
Located
above
the
heart
•
Located
above
the
heart
•
Produces
lymphocytes
•
Produces
lymphocytes
•
also
an
endocrine
gland,
secretes
thymosin
•
also
an
endocrine
gland,
secretes
thymosin
14
Structures of the
lymphatic system
2.03 Remember the stuctures of the
lymphatic system
Structures of the
lymphatic system
15
Thymus gland
What is unique about
the thymus gland?
It is largest during
childhood and then
after puberty it begins
to shrink.
2.03 Remember the structures of
the lymphatic system
What are the structures of the
lymphatic system?
2.03 Remember the stuctures of the
lymphatic system
16