The primitive pit is a depression in the center of the primitive node, connecting to the notochord. It consists of part of the primitive streak.
Famous quotes containing the words primitive and/or pit:
“This is a very primitive country.”
—James Poe (1921–1980)
“Violence does, in truth, recoil upon the violent, and the schemer falls into the pit which he digs for another.”
—Sir Arthur Conan Doyle (1859–1930)