pls answer the above questions
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pls answer the above questions
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Answer:
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Answer:
Explanation:
a) A ⏩ artery
B ⏩ vein
C ⏩ capillary
b) 1- tunica externa (connective tissue)
2- lumen
3- tunica media
4- tunica interna ( endothelium)
c)1) arteries have a small lumen and are thick walled whereas veins have large lumen and are thin walled.
2) arteries does not have valves but veins contains valves.
d) A ⏩ oxygenated blood (except pulmonary artery)
B ⏩ deoxygenated blood (except pulmonary vein)
e) gaseous exchange takes place in capillaries i.e C diagram.