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10 Cards in this Set
- Front
- Back
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Describe main components of lymphatic system...
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- Organized lymph tissue in channels and collecting ducts with lymph fluid
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What is the primary purpose of the lymph nodes?
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filtration of lymph with two types
1. Superficial subcutaneously with superficial veins 2. Deep- beneath fascia and muscles, follows deep veins |
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What is the primary purpose of the lymphatic system?
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1. Fluid balance
2. Purification and cleansing 3. Defense 4. Nutrition |
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Why is the lymphatic system clinically important?
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The study of lymphatic drainage of various organs is important in diagnosis, prognosis, and treatment of cancer. The lymphatic system, because of its physical proximity to many tissues of the body, is responsible for carrying cancerous cells between the various parts of the body in a process called metastasis.
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What are the three main superficial drainage areas of lymph nodes?
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1. Cervical- head/supraclavicular and upper extremities, drain to jugular nodes
2. Axillary- infraclavicular to umbilicus, drain to axillary and then subclavian 3. Inguinal- caudal to umbilicus drain to inguinal and then lumbar |
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What parts of the body does lymph system not perfuse tissue in (6)?
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SCEEEB
1. Selected portions of peripheral nerves 2. CNS 3. Epidermis (hair/nails) 4. Endomysium of muscles and cartilage 5. Exceptions still possess direct diffusion 6. Bone Marrow |
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Describe the mechanism (interstitial pressure and intrinsic and extrinsic lymphatic pump)
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Interstitial pressure- normally -6.3mmHg and increase pressure increases lymph flow (above 0 mmHg will collapse blood vessels)
intrinsic- smooth muscle contracts pumping fluid to next, causing pressure gradients to move lymph extrinsic- direct pressure on vessels causes lymph movement |
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and basic description of lymph flow...
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1. Unidirectional in channels controlled by one way valves
2. all unite with thoracic duct, which is largest lymph vessel |
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What are some clinical aspects of poorly functioning lymphatic system?
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1. Too much fluid getting in
a. edema (build up of interstitial fluid) leads to... b. build up of pressure, CHF, bad heart 2. too much fluid getting out a. starvation b. liver cirrhosis c. abnormal protein metabolism |
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What are the principles of OMT in lymphatic system?
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Goal- balance, well-functioning lymphatic system in which no edema occurs by mobilizing lymph
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