POUL 4060 Lecture Notes - Lecture 11: Mucoprotein, Calcification, Uterus
8 Apr 2019
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Shell: mammillary cores, mostly protein, some carbohydrate and mucopolysaccarides, probably formed by epithelial cells of isthmus. However, if you have calcium available, you will form this layer. Inner shell membrane and outer shell membrane is put on in the isthmus. Last thing that happens in isthmus is the little pores/seeds are put on the outer shell membrane. Then, pass into the uterus after shell membrane are filled up, add fluid to get nice smooth surface. Few hours in, we start the calcification process. When you have, crystals growing next to each other on these little seeds, the crystals will usually have big gaps b/w them which creates pores. The pores are a good thing that allow for traffic such as gas exchange (co2 rid, bring in oxygen) through the shell. These membranes are very permeable and open which is why bacteria can get through.
