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)
“It’s well
If God who holds you to the pit of hell,
Much as one holds a spider, will destroy,
Baffle and dissipate your soul.”
—Robert Lowell (1917–1977)