Biology 3338A Lecture Notes - Lecture 26: Intermediate Mesoderm, Dermis, Cell Adhesion
9 Jul 2016
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* the central mesoderm is going to be the notochord. * it secretes things and make things around more dorsal. * right next to the notocord you make paraxial mesdoerm that makes the somites. * the most anterior region (head), mesoderm is weird. Because the brain is so big and forms early in development we don"t get how the mesoderm is structured in that area, therefore for our purposes we are only talking about the trunk (from the neck down). * so you have parxial mesoderm on both sides; and then there are these two molecules that form boundaries. One of the m is called hairy which turns on a receptor called ephrin. * the other boundray has a mol called notch, which turns on mesp which turns on. * eph and ephrin are the ones that do the business, * as time passes on, you form another boundary, with hairy and notch.
