Foramen

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In anatomy and osteology, a foramen (/fəˈreɪmən/;^[1][2] plural foramina, /fəˈræmɪnə/ or foramens /fəˈreɪmənz/) is an open hole that is present in extant or extinct amniotes. Foramina inside the body of animals typically allow nerves, arteries, veins, or other structures to connect one part of the body with another.