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:
“That primitive head
So ambitiously vast,
Yet so rude in its art,
Is as easily read
For the woes of the past
As a clinical chart.”
—Robert Frost (1874–1963)
“For tamed and shabby tigers
And dancing dogs and bears,
And wretched, blind pit ponies
And little hunted hares.”
—Ralph Hodgson (c. 1871–1962)