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)
“Greed is a bottomless pit which exhausts the person in an endless effort to satisfy the need without ever reaching satisfaction.”
—Erich Fromm (1900–1980)