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A level Biology: Post your doubts here!

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D since pressure decreases from capillary to vein and veins have lower thickess than arteries but more than capillaries. Although i dont get the velocity one graph :p
Velocity is minimum in capillaries for efficient exchange of substances...in the veins it is increased due to the action of skeletal muscles maybe
 
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Velocity is minimum in capillaries for efficient exchange of substances...in the veins it is increased due to the action of skeletal muscles maybe
Yes but what bugs me is shouldnt the difference in velocity between arteries and veins be greater? It seems to be so low
 
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