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.
Ethnocentrism is the view or belief that oneâs ethnicity is superior over the others. The âethnoâ from the word ethnocentrism comes from âethnosâ, a Greek word meaning âpeopleâ.âCentrismâ meanwhile refers to âcenterâ.n todayâs society, people may not be aware that ethnocentrism exists. People got used to being what they are, and believing in the things they believe, without really thinking that their choices may be a result of feeling superior over others. A classic example is on the topic of religion.