The pressure of blood entering capillaries is about seven times higher than that of blood leaving
the capillaries.
What correctly explains this observation?
1 Blood pressure decreases with distance from the heart.
2 Tissue fluid formation is due to a net loss of plasma from capillaries.
3 Veins have fewer elastic and muscle fibres in their walls than arteries.
1 )
1, 2 and 3
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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