Hormones are molecules produced by the ____ system that send ____ to various parts of the body. A mare's cycle lasts ____ days and is influenced by a variety of hormones released by the ____ and the ____. In females of species, ____ helps control the ____ and stimulates the growth of ____ in the ovaries Luteinizing hormone (LH) is produced and released in the ____ gland ____ stimulates growth in many male-larger vertebrates Progesterone helps to regulate the ____. Its main job is to get the ____ ready for ____ FSH levels change throughout the ____ cycle, with the ____ levels happening just before an egg is released by the ____ Oestrogens are also sex hormones, the ____ make most ____ hormones, although the ____ and fat cells also make small amounts of the hormones ____ is the stage following oestrus and the female is ____ receptive to the male. This stage lasts for about ____ Oestrogen levels are ____, while ____ peaks after the start of dioestrus and then ____ to basal levels by the end of dioestrus

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