histology of blood cells, cardiac muscle, blood vessels and lymphatics
TRANSCRIPT
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Histology of Blood Cells, Cardiac Muscle, Blood
Vessels and Lymphatics
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Formed Elements of Blood
• Formed Elements = Erythrocytes, Leukocytes, Platelets
• Non-formed Elements = Plasma
erythrocyte
neutrophil eosinophil
basophil
lymphocyte
monocyte
platelets
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Three neutrophils and a lymphocyte.
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Two eosinophils.
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A neutrophil and a monocyte.
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A monocyte and a neutrophil.
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A monocyte, neutrophil, lymphocyte, and basophil.
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A monocyte
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A lymphocyte and a neutrophil.
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One small lymphocyte, a
larger lymphocyte and an
eosinophil.
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An eosinophil and small lymphocyte.
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A neutrophil,
and a basophil.
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platelets.
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Cardiac Muscle = Myocardium
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The Structure of Blood Vessels
• Tunica Interna (also called the Tunica Intima)
– smooth inner layer that repels blood cells and platelets
– endothelium of simple squamous cells on a basement
membrane
• Tunica Media
– middle layer of smooth muscle, collagen, elastic fibers
– smooth muscle causes vasoconstriction and
vasodilation
• Tunica Externa (also called the Tunica Adventitia)
– outermost layer of loose connective tissue
– holds vessels in place
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http://www.siumed.edu/~dking2/crr/cvguide.htm#vessels
Blood Vessel Layers
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Veins and Arteries
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http://www.histol.chuvashia.com/atlas-en/circulatory-en.htm
Aorta
1 Tunica Intima
2 Tunica Media
3 Tunica Adventitia
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Lymph Vessels and
Lymph Node
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http://education.vetmed.vt.edu/Curriculum/VM8304/lab_companion/Histo-Path/VM8054/Labs/Lab13/EXAMPLES/Exlymnod.htm
Lymph Node capsule
Germinal
Centers
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lymphocytes
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Lymphatic vessel (L) next to a small vein (V). Lymphatics due not contain
RBCs, but often contain a few lymphocytes. Taken from Wheater’s Functional
Histology, a text and colour atlas, p. 156, Figures 8.22 and 8.23.
Lymph Vessel and a Small Vein
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A lymph vessel valve (V). Taken from Wheater’s Functional Histology, a
text and colour atlas, p. 156, Figures 8.22 and 8.23.