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15 Cards in this Set
- Front
- Back
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Blood vessel layers |
1) Tunica intima (with subendothelial connective tissue) arteries have internal elastic lamina 2)Tunica media smooth muscle external elastic lamina arteries have much bigger one 3)Tunica adventitia sympathetic innervation can only go to border between this and media- gap junctions rest of the way
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Large arteries |
1) Elastic (elastin) 2) have foam cells, made up of macrophages and smooth muscle cells that soak up/ingest lipids and then build up, forming artherosclerosis 3) These and medium arteries need blood vessels themselves (called vasa vasorum) |
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Pericytes |
stem cells for neovascularization |
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Continuous capillaries |
- no fenestrae, linked by tight junctions -use pinocytotic vesicles |
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Fenestrated capillaries |
-have fenestrae (no holes, have little diaphragms) kidneys, choroid are examples
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Discontinuous sinusoidal capillaries |
-kind of a broken down fenestrated. discontinuous everything (Barrel slats) |
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Spleen function |
Recycle/produce new RBC's |
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Billroth's cords |
Line of lymphatic cells in the Red pulp of the spleen, whose primary function is to destroy old RBC's |
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PALS |
Periarterial Lymphatic Sheath; line of T cells surrounding the central artery in the white pulp of the spleen, causing T cells to be produced |
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White pulp |
Location where B cells divide in the spleen; made up of a dense connective tissue |
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Blood-Thymus Barrier function |
this barrier prevents blood antigens from facing developing T cells of the Thymus, which would cause T cells to mistake these antigens as "self" |
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Inner cortex of lymph nodes |
Location of T cell division in the lymph node |
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Outer cortex of lymph nodes |
Location of B cell division (in the germinal centers) |
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Medulla of lymph nodes |
Location of antigen presentation; in this area, specialized venule sinuses allow cells from MALT to enter, combine with B and T lymphocytes in medulla to create an immune response; most of the immune cells here are plasma cells |
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Red pulp |
Location of the primary function of the spleen, which is to destroy old RBC's; blood vessels here have no endothelial cells |
