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Heart, Blood Vessels and Blood (Heart (Conduction System (Sinoatrial (SA)…
Heart, Blood Vessels and Blood
Heart
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Conduction System
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- Right and left bundle branches
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Blood Vessels
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Capillaries
Continuous
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In CNS, lungs, skin, smooth & skeletal muscles
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Fenestrated
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Small intestine, kidneys, choroid plexus, endocrine glands
Broken capillary & large clefts, basement membrane is not continous
Sinusoid
Large, winding for items like proteins, cells
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Veins
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Median Veins
Has valves, important in lower extremity to prevent backflow
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Blood
Plasma
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More than 100 different molecules- ions, minerals, vitamins & hormones
Nutrients- lipids, sugar, amino acids
Cells
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Thrombocytes
Not cells, pieces of cytoplasm from megakarocyte
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