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:
“We have as yet had no adequate account of a primitive pine forest.”
—Henry David Thoreau (1817–1862)
“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)