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25 Cards in this Set
- Front
- Back
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What are the two functions of the lymphatic system?
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Transport
Immune Response |
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What does the lymphatic system transport?
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Returns tissue fluid/proteins back to blood
Absorbs lipid in small intestines Lymphocytes Antigens to lymph nodes |
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What is Lymphatic system's role in immune response?
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Defence against foreign material and abnormal cells by exposing them to immune system
Antigen response |
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What are the four components of lymphatic system?
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1. Lymphatic vessels
2. Lymphatic cells 3. Primary lymphoid tissues 4. Secondary Lymphoid tissues |
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What are the cells of the LS?
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Lymphocytes, plasma cells, antigen presenting cells, supporting cells
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What are the four types of primary lymphoid tissue?
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1. Thymus
2. Bone marrow 3. Malt of gut 4. Bursa Fabricius |
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What is the role of primary L tissue?
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Production/maturation of lymphocytes
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What are the three types of secondary L tissue?
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1. organised non-mucosal tissues
2. organised mucosa-assicated tissues 3. organised mucosa-associated lymphoid tissues |
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What is the role of secondary L tissue?
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Immune response and production of lymphocytes
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What do lymphatic vessels do?
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Return lymph to blood vascular system
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Name the four main lymphatic vessels.
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1. Tracheal duct
2. Lumbar trunk 3. Cisterna chyli 4. Thoracic duct |
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What is the origin of the tracheal ducts?
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Retropharyngeal LN
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What structures do the tracheal ducts drain?
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Head & Neck
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What course does the tracheal duct follow?
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Follows the course of the trachea
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Which vessel/s do the tracheal ducts join?
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Thoracic ducts OR Jugular veins
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What forms the lumbar trunks?
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Efferent L vessels of medial iliac node
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What structures do the lumbar trunks drain?
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Hindlimbs, lumbar region, pelvic region, flanks & inguinae
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What course do the lumbar trunks follow?
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Runs cranially with aorta and caudal vena cava
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What is the cisterna chyli?
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Irregular lymphatic sac contained mainly b/w aorta and vertebrae
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What does the cisterna chyli recieve lymph from?
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Lumbar trunks
Abdominal organs |
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What does the cisterna chyli become?
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The thoracic duct
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What is the thoracic duct formed by?
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Cisterna chyli
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What course does the thoracic duct follow?
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Passes thru aortic hiatus, diaphragm and then along the dorsal aorta and to the left over the aortic arch
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What additional structures does the thoracic duct drain?
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Lungs and mediastinal structures
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Where does the thoracic duct terminate?
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Left jugular vein or cranial vena cava
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