Final answer:
Filtration pores that are about 60 to 80 nm in diameter are found in fenestrated capillaries. Fenestrated capillaries are common in areas such as the small intestine, kidneys, and various endocrine structures.
Step-by-step explanation:
Filtration pores that are about 60 to 80 nm in diameter are found in fenestrated capillaries.
These capillaries have pores, or fenestrations, in addition to tight junctions in the endothelial lining, making them permeable to larger molecules. Fenestrated capillaries are common in areas such as the small intestine, kidneys, and various endocrine structures.