【医】 hypochordal arch
notochord
【医】 chorda dorsalis; chordae vertehralis; dorsal cord; notochord
below; descend; down; give birth to; give in; go to; leave off; lower; next
take
【医】 cata-; hyp-; infra-; kat-; sub-
bend; bow
【医】 arc; arch; arcus; toxo-