Which comparisons of blood, tissue fluid and lymph are correct?
1) Blood has a higher concentration of proteins than tissue fluid because the larger proteins are too big to pass through the endothelial pores into tissue fluid.
2) Lymph has a higher concentration of lymphocytes than tissue fluid as a high number of lymphocytes are located in lymph nodes.
3) Macrophages are too large to leave the blood to enter tissue fluid whereas neutrophils, which are much smaller, can enter tissue fluid and pass into lymph.
1 )
1, 2 and 3
1 and 2 only
3 )
2 and 3 only
4 )
3 only
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