7462602
Descripción
Mapa Mental por Lauren Garner, actualizado hace más de 1 año
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Creado por Lauren Garner
hace casi 8 años
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Blood Vessels
- ARTERY structure
- Thick walls
- Withstands high blood pressure
- Withstands high blood pressure
- Smooth muscle
- Alters diameter of lumen - vary blood flow
- Alters diameter of lumen - vary blood flow
- Elastic fibres
- Allows walls to stretch and recoil - smooths blood flow
- Allows walls to stretch and recoil - smooths blood flow
- Lined with smooth
layer of endothelial
cells
- Low friction surface - eases blood flow
- Low friction surface - eases blood flow
- Narrow lumen
- Thick walls
- CAPILLARIES structure
- Very thin wall (one cell thick)
- Allows rapid exchange between blood
and tissues
- Allows rapid exchange between blood
and tissues
- Very thin wall (one cell thick)
- VEINS structure
- Thin walls
- Under low pressure
- Under low pressure
- Very little smooth muscle/elastic fibres
- No pulse of blood so there is
no stretching/recoiling
- No pulse of blood so there is
no stretching/recoiling
- Wide lumen
- Large volume of blood and acts as a reservoir
- Large volume of blood and acts as a reservoir
- Valves
- Stops backflow
- Stops backflow
- Thin walls
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