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12 Cards in this Set
- Front
- Back
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Blood vessels
H & E- Blood vessels consisting of veins (b) and arteries (c) progressively branch to form venules (d), arterioles (e) and capillaries (a). |
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More blood vessels
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Blood Vessel: Elastic fibers
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What are these stripey lines showing?
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Neurovascular bundle
MA = Muscular Artery MV = Medium Vein N = Nerve F = Fat |
What are all of these items grouped together considered?
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H & E, Orcein- A medium size artery occurs with its companion vein which has folded over to provide two sections through the same vein. Compare the relative size of the tunica media and tunica adventitia in both artery and vein. The orcein stain has identified elastic fibers. Note the highly scalloped appearance of the internal elastic lamina of the artery and less scalloped appearance of the internal elastic lamina in the veins.
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Which one is an artery and which one is a vein? How can you tell?
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The INTERNAL ELASTIC LAMINA (or internal elastic lamella) :
a layer of elastic tissue that forms the outermost part of the tunica intima of blood vessels. It readily visualized with light microscropy in sections of muscular arteries, where it is thick and prominent, and arterioles, where it is slightly less prominent and often incomplete.[1] It is very thin in veins and venules.[1] In elastic arteries such as the aorta, which have very regular elastic laminae between layers of smooth muscle cells in their tunica media, the internal elastic lamina is approximately the same thickness as the other elastic laminae that are normally present. |
What is the squigly line around there and what is it's purpose?
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Orcein-PIC, A medium size ARTERY showing well defined TUNICA INTIMA adjacent the INTERNAL ELASTIC LAMIA, a well developed TUNICA MEDIA (brown) containing ELASTIC FIBERS, and the TUNICA ADVENTITIA (green) continuous with the surrounding connective tissue.
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Is this a vein or artery? What features does it have that gives it away?
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ELASTIC FIBERS!
H & E, Orcein- This higher power view through a muscular artery shows the scalloped internal elastic lamina as well as prominent elastic fibers within the tunica media and an abundance of elastic fibers within the tunica adventitia. |
Artery wall is full of ____ fibers!
in the IEL, tunica media, and tunica adventitia. |
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The vasa vasorum (Latin, "the vessels of the vessels") is a network of small blood vessels that supply large blood vessels.
The vasa vasorum are found in large arteries and veins such as the aorta and its branches |
What is unusual about this cross section of a blood vessel (artery)? Where might you find this happening?
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This medium sized vein shows VASA VASORUM (arrows) within the TUNICA ADVENTITIA.
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In this picture of a medium muscular artery... What are these black arrows pointing to? Which layer of the artery is it in?
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prevent backflow of blood!
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This slide is a cross-section through a small vein. Note the presence of valves which appear to extend across the lumen. These valves are thin flaps and extensions of the endothelial lining. Note the accumulations of erythrocytes at several areas of the lumen. What is the function of valves in a vein?
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This section through the wall of a blood vessel shows from the lumen (1) outwards, the nucleus of an endothelial cell (2), a centriole (3) and caveolae (4) within endothelial cells, caveolae within a smooth muscle cell (5), cytoskeletal filaments (6), the basal lamina (7) and the nucleus of a smooth muscle cell (8)
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This chart is labeled 1-8 of a blood vessel.
Orient yourself. Where is the lumen? Which blob is a nuclues of an endothelial cell? Nucleus of a smooth muscle cell? Where is the basal lamina of the endothelial cells? |
