問題一覧
1
Types of circulation
Systematic, Pulmonary
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Systematic circulation
Blood vessels, heart, tissues
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Pulmonary circulation
Blood vessels, heart, lung
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Circulatory system
Heart + blood vessels
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Artery, arterioles function
Carry blood away from the heart
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Capillaries function
Site of exchange
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Veins, venules function
Return blood to the heart
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Tunici
Tunica intima, Tunica media, Tunica externa ( adventitia )
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Elastic artery tunica intima
Endothelium, Subendothelial layer, Internal elastic lamina
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Elastic artery tunica media
Elastic fibrae
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Elastic artery tunica externa ( adventitia )
Loose ct, Vasa vasorum
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Muscular artery tunica intima
Endothelium, Subendothelial layer
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Muscular artery tunica media
Smooth muscle, A few elastic, reticular, collagenous fibres
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Muscular artery tunica externa ( adventitia )
Loose ct, Vasa vasorum
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Artery pushing blood
The thick muscle can contract to push the blood along
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Arterioles tunica intima
Endothelium, Subendothelial layer, Internal elastic lamina
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Arterioles tunica media
Only in large, Smooth muscle, A few elastic, reticular, collagenous fibres
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Aterioles tunica externa ( adventitia )
Only in large, Loose ct
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Types of capillaries
Continuous, Sinusoidal, Fenestrated
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Continuous capillaries
Attached by pericytes, Cells strictly adhere to themselves, Continuous basal lamina
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Fenestrated capillaries
Attached by pericytes, Continuous basal lamina with a few pores, A few pores ( fenestra ) in cells, A few splits between cells
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Sinusoidal capillares
The large diameter, Pores in the basement membrane, Numerous gaps between cells, Fenestra in the cytoplasm of cells
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Wall of capillary
One cell thick
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The capillary
Exchange materials between the blood and body cells, Only occur through capillaries