Metestrus or diestrusThis phase is characterized by the activity of the corpus luteum, which produces progesterone. The signs of estrogen stimulation subside and the corpus luteum starts to form. The uterine lining begins to appear. In the absence of pregnancy the diestrus phase (also termed pseudo-pregnancy) terminates with the regression of the corpus luteum. The lining in the uterus is not shed, but is reorganized for the next cycle.AnestrusAnestrus refers to the phase when the sexual cycle rests. This is typically a seasonal event and controlled by light exposure through the pineal gland that releases melatonin. Melatonin may repress stimulation of reproduction in long-day breeders and stimulate reproduction in short-day breeders. Melatonin is thought to act by regulating the hypothalamic pulse activity of the gonadotropin-releasing hormone. Anestrus is induced by time of year, pregnancy, lactation, significant illness, chronic energy deficit, and possibly age.After completion (or. Her older sister Diane was already under the steady cock-hold of a college boy called Mac and she had often bragged to Kaylie that his "thing" was so big they had decided to only use about half of it to exercise her happy twat. He would be at the pool with them this afternoon and she planned to get some ringside viewing of it sitting inside his speedos just to make sure her sister was not exaggerating about his size.The young female student had come into contact with a couple of fairly large penises in her recent adventures and she felt adequately prepared to take on anything offered for her pleasure. Mr. Holloway the music teacher let her play with his shaft and she marveled that even after she had wrapped both hands around the thick thing, there were still several inches remaining for her to slide her lips up and down. It didn't seem possible that the entire monster could be gobbled up by girls of her age and size.He was a very considerate man and gave her ample warning of the.
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