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Circulatory System, image, image, image, image, image - Coggle Diagram
Circulatory System
Caracteristics of Villi:
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Microvilli:
They are found in the small intestine, they increase the surface area of the cell and the number of digestive enzymes.
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Parts
blood vessels
Capillaries:
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low pressure, extremely narrow lumen diameter
none valves, no muscles and elastic fibres
Veins:
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Thin wall: Tunica adventita, tunica media and tunica intima
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Arteries:
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thick wall: tunica adventita,tunica media, tunica intima
high pressure, narrow lumen diameter
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Blood
Blood is a tissue made up out of a fluid called "Plasma" in which red blood cells, white blood cells and platelets are suspended.
Plasma:
transport nutrients, CO2, urea, glucose, hormones and amino acids.
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heart
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the right side
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has the right atrium, vena cava, tricuspid valves, right ventricle and pulmonary artery
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the left side
has the left atrium, pulmonary vein, mitral valves, Aorta
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