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.
Ethnography (from Greek á¼Î¸Î½Î¿Ï ethnos folk, people, nation and Î³ÏÎ¬ÏÏ grapho I write) is the systematic study of people and cultures. It is designed to explore cultural phenomena where the researcher observes society from the point of view of the subject of the study.thnography is a qualitative design, where the researcher explains about shared learnt patterns of values, behaviour, beliefs, and language of a culture shared by a group of people. The field of anthropology originated from Europe and England designed in late 19th century.