Being Part of a ___ Group,whether It Is with Family

question 197

Short Answer

Being part of a ___ group,whether it is with family or friends,allows us to feel secure about our place in the world.

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Definitions:

Primitive Streak

Dynamic, constantly changing structure that forms at the midline of the blastodisc in birds, mammals, and some other vertebrates. It is active in gastrulation as cells migrate to a narrow furrow at its center, the primitive groove, and sink into the interior of the embryo. The anterior end of the primitive streak is Hensen’s node.

Epiblast

An early embryo layer from which all the three primary germ layers develop during gastrulation in the formation of a vertebrate body.

Notochord

A flexible rod-like structure in the early stages of embryos in all chordates, providing skeletal support.

Blastocoel

The fluid-filled cavity of a blastula.