Primitive Pit

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 pit and/or primitive:

    The site of the true bottomless financial pit is the toy store. It’s amazing how much a few pieces of plastic and paper will sell for if the purchasers are parents or grandparent, especially when the manufacturers claim their product improves a child’s intellectual or physical development.
    Lawrence Kutner (20th century)

    The primitive wood is always and everywhere damp and mossy, so that I traveled constantly with the impression that I was in a swamp; and only when it was remarked that this or that tract, judging from the quality of the timber on it, would make a profitable clearing, was I reminded, that if the sun were let in it would make a dry field, like the few I had seen, at once.
    Henry David Thoreau (1817–1862)