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

Structures of the lymphatic system Lymph fluid Lymph vessels Lymph nodes Lymph glands 2.03 Remember the stuctures of the lymphatic system 3

Structures of the lymphatic system Lymph fluid straw-colored clear 2.03 Remember the stuctures of the lymphatic system 4

Structures of the lymphatic system Lymph vessels parallel to blood vessels transport lymph 2.03 Remember the stuctures of the lymphatic system 5

Structures of the lymphatic system Lymph vessels parallel to blood vessels 2.03 Remember the stuctures of the lymphatic system 6

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 2.03 Remember the stuctures of the lymphatic system 7

Structures of the lymphatic system Lymph vessels Lacteals Specialized lymph vessels in the small intestines 2.03 Remember the stuctures of the lymphatic system 8

Structures of the lymphatic system Lymph nodes tiny, oval-shaped structures range in size from a pinhead to an almond Lymph node 9

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 2.03 Remember the stuctures of the lymphatic system 10

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 2.03 Remember the stuctures of the lymphatic system 11

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. 2.03 Remember the stuctures of the lymphatic system 12

Structures of the lymphatic system Spleen Sac-like mass Located in the LUQ 2.03 Remember the stuctures of the lymphatic system 13

Structures of the lymphatic system Thymus gland located in the upper, anterior chest also an endocrine gland 2.03 Remember the stuctures of the lymphatic system 14

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 2.03 Remember the stuctures of the lymphatic system 15