Tags: Anatomical Structure, Embryology.

The Zone of Polarizing Activity (ZPA) is an area of mesenchyme that contains signals which instruct the developing limb bud to form along the anterior/posterior axis. Limb bud is undifferentiated mesenchyme enclosed by an ectoderm covering. Eventually the limb bud develops into bones tendons muscles and joints.

Loading...

This page contains content from the copyrighted Wikipedia article "Zone of polarizing activity"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.