ANSC 340 Lecture Notes - Lecture 22: Cyst, Ovarian Cyst, Prostaglandin F2Alpha
15 Nov 2016
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Document Summary
Slowing down drip of gnrh in tonic center. Luteolysis (if not pregnant) = killing corpus luteum (cl regression) Requires pgf2alpha (result of ot +ot-r on endometrium of uterus) Granulosa cells & theca interna become luteal cells (large and small, respectively) Increase in ot causes increase in pgf2alpha which causes increase in ot in a cycle: cl is producing progesterone and ot, progesterone is priming endometrium by increasing number of e2-r. Increase in e2+e2-r causes increase in numbers of ot-r: follicle continues growing, ot + ot-r leads to conversion of arachidonic acid to pgf2alpha, pgf2alpha lyses cl. If no pgf2alpha or not enough of it, cysts will form. Follicular cysts are more common than ovarian cysts. Theca interna (small) and granulosa cells (large) transform into luteal cells. Late metestrus: increase size (yellow tissue mass= small and large luteal cells) Diestrus: peak progesterone production, very dense luteal tissue. Sow- 2 embryos in each horn necessary for maternal recognition.
