1. The Structures of the Lymphatic System

2. 2.03 Remember the structures of the lymphatic system
What are the structures of the
lymphatic system?
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3. Structures of the lymphatic system
Lymph fluid
Lymph vessels
Lymph nodes
Lymph glands
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4. Structures of the lymphatic system
Lymph fluid
straw-colored
clear
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5. Structures of the lymphatic system
Lymph vessels
parallel to blood vessels
transport lymph
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6. Structures of the lymphatic system
Lymph vessels parallel to blood vessels
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7. Structures of the lymphatic system
Lymph vessels
Lymph flows only in one direction
Lymphatic ducts: Large lymph vessels
Thoracic duct
Also called the left lymphatic duct
Receives lymph from the left side as pictured
Right lymphatic duct
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8. Structures of the lymphatic system
Lymph vessels
Lacteals
Specialized lymph vessels in the small intestines
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9. Structures of the lymphatic system
Lymph nodes
tiny, oval-shaped structures
range in size from a pinhead to an almond
Lymph node 9

10. Structures of the lymphatic system
Lymph nodes
Where are lymph nodes located?
In the head, neck, axilla (under the arm), abdomen and groin
Why are there so many?
Nodes produce lymphocytes and filter harmful bacteria
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11. Structures of the lymphatic system
Tonsils
3 pairs
Masses of lymphatic tissue
Palatine tonsils
sides of throat
Adenoids
upper throat
Lingual tonsils
back of tongue
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12. Structures of the lymphatic system
Say “aahhh”
Why this is helpful?
The pharynx arches up, the tongue goes down, the uvula moves up and this all provides a better view of your throat.
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13. Structures of the lymphatic system
Spleen
Sac-like mass
Located in the LUQ
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14. Structures of the lymphatic system
Thymus gland
located in the upper, anterior chest
also an endocrine gland
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15. Structures of the lymphatic system
Thymus gland
What is unique about the thymus gland?
It reaches its greatest size at puberty
After puberty it begins decreasing in size
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