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17 Cards in this Set
- Front
- Back
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State function of lymphatic system |
Carry interstitial fluid from tissue back to cardiovascular circulation and provide location for immune system to monitor the body |
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What parts make up yhr lymphatic system |
2 parts, the lymphatic vesselsbehich transport fluids and lymphoid tissue and organs which house phagocytic cells and lymphocytes |
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How does fluid get into and out of lymphatic vessels |
Hydrostatic and osmotic pressure cause fluid to be expelled in arterial end and reabsorbed in venous end in capillaries |
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What is lymph made of |
It's made of interstatial fluid and plasma proteins that escape blood and must be returned |
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What happens if lymphatic fluid is not returned |
If accumulates forming edema |
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Characteristics of lymphatic vessels |
Permeable, have mini valves, one way tubes. |
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How is lymphatic system split and what does it drain |
Right duct drains right arm, right head, right throat. Left duct drains rest of body |
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Characteristics of lymphatic vessels |
Thin walled Large ones have valves |
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What causes lymph to move |
Valves Skelatel muscle Change in thorax pressure Smooth muscle in walls of large lymphatics |
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Function of lymph nodes |
To remove foreign material from lymphatic stream and to produce lymphocytes that function in immune response |
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Where can you find large clusters of lymph nodes |
In inguinal region, axillary, and cervical region |
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Explain structure of lymph nodes |
1cm long Burried in surrounding ct Covered in fibrous capsule Kidney shaped Has soft reticular CT internally Trabeculae CT divided into compartments |
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Cells of lymph noed have |
Lymphocytic follicles with germinal center in outer cortex Remaining cortical cells are t lymphocytes that circulate continously between blood, lymph node, lymphatic stream Medullary has T and B lymphocytes |
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Descrive relationship of lymph with afferent and efferent vessels |
It enters via afferent and exits via efferent Theres less efferent to increase pressure and slow down drainage |
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What happens to germinal centers when B cells are activated |
As B cells divide into plasma cells and increase in number the germinal centers increase in size |
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What tissue makes up lymph organs |
Reticular CT |
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Where is lymph filtered |
In lymph nodes only |
