There are technically 3 types of capillaries. What are they?
1st is the continuous capillaries (tight junctions like in brain)
2nd is fenestrated capillaries (these are in the kidneys, the intestinal villa, and some endocrine glands- they have pores (fenestrations-swiss cheese) between the endothelial cells, allows small substances to cross the cell membrane pretty easily).
3rd type: discontinuous, or sinusoids. (These have really large gaps between the endothelial cells, considered the leakiest kinds of capillaries) found in liver, spleen, and bone marrow.