Estradiol, or more precisely, 17Î²-estradiol, is a steroid and estrogen sex hormone, and the primary female sex hormone. It is named for and is important in the regulation of the estrous and menstrual female reproductive cycles.n the female, estradiol acts as a growth hormone for tissue of the reproductive organs, supporting the lining of the vagina, the cervical glands, the endometrium, and the lining of the fallopian tubes.
Ethnohistory is the study of ethnographic cultures and indigenous customs by examining historical records. It is also the study of the history of various ethnic groups that may or may not exist today. Ethnohistory uses both historical and ethnographic data as its foundation.
(noun) The tendency to view your own society or culture as superior and the standard by which other societies and cultures are judged. Example: Jingoism or that democracy is the best political system. Audio Pronunciation: (ethÂ·noÂ·cenÂ·trism). Download Audio Pronunciation: ethnocentrism.mp3.