Term
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Definition
thin-walled vessels lined with endothelium
clefts between endothelial cells
- incomplete basement membrane
end blindly in extracellular spaces, retrieve lymph |
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Term
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Definition
large lumen comparatively
Valves to prevent backflow |
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Term
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Definition
| similar to veins, except more smooth muscle in media |
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Term
| Lymph Nodes: Outer vs Inner(deep) Cortex |
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Definition
Outer Cortex - B Cells
Inner(deep) cortex - T cells |
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Term
| Path of flow through lymph node |
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Definition
Enters through Afferent lymphatic vessel
>>>
subcapsular sinus
>>>
paratrabecular(cortical) sinuses
>>>>
medullary sinus
>>>>>
efferent lymphatic |
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Term
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Definition
medullary sinuses between medullary cords.
cords are aggregations of diffuse lymphoid tissue |
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Term
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Definition
Free cells(lymphocytes) of lymphoid tissue
lymph nodes, spleen, tonsils, digestive, respiratory. |
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Term
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Definition
Found in cortex of lymph nodes and in white pulp of spleen
Primary Nodule: rounded collection of tightly packed small lymphocytes
Secondary nodule: spherical cluster of larger pale staining cells. |
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Term
| Blood Vessels path in Lymph Nodes |
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Definition
enter and leave at the hilus and run in trabeculae(through cortex)
Blood can enter lymp nodes through high endothelial venule |
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Term
| Spleen has White pulp and Red Pulp |
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Definition
White pulp- Lymphoid tissue: lymphocytes, plasma cells, macrophages.
Central Artereis pass into pulp from trabeculae
Red Pulp: rich in blood. Contains sinuses surronded by splenic(billroth) cords.
Supporting meshwork filled with macrophages, blood elements and plasma cells |
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Term
| Blood Vessel Course in Spleen |
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Definition
Enters at hillus
>>>>>
trabecular artery
>>>>>
Central Arteries(white pulp)
>>>>>
Penicillus(red pulp)
>>>>
venous(splenic) sinuses
>>>>
pulp vein, trabecular vein, splenic vein |
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Term
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Definition
Storage and destruction of blood cells and platelets
production of: lymphocytes, antibodies
hemoglobin degradation and iron stored in macrophages |
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Term
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Definition
Medulla is continuous from one lobule to the next.
Each lobule has its own cortex
Function: Releases hormones responsible for Differentiation and maturation of T cells |
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