notochordal canal


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notochordal canal

[¦nōd·ə¦kord·əl kə′nal]
(embryology)
A canal formed by a continuation of the primary pit into the head process of mammalian embryos; provides a temporary connection between the yolk sac and amnion.
References in periodicals archive ?
Persistence of canal on basilar part of clivus is a rare congenital defect of skull base representing an embryological remnant depicting the cephalic end of the notochord and corresponds to the course of the notochordal canal in the basiocciput caudally.
The fossil has a widely opened notochordal canal suggesting it represents a larval individual (Rogers 1985).