samueldfhung
10.03.2020 •
Biology
Dysfunctional uterine bleeding (DUB) is caused by a. endometrial fibroid tumors. b. absent or diminished levels of progesterone. c. endometrial inflammation. d. reproductive tract malignancies.
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Ответ:
b. absent or diminished levels of progesterone
Explanation:
Dysfunctional uterine bleeding refers to abnormal uterine bleeding that causes the endometrial line to shred off in an abnormal manner.
Fibroid tumor, endometrial inflammation and malignancies are indirect causes of uterine bleeding but most common cause is the hormonal imbalance.
Progesterone is responsible for development and maintenance of endometrium so absent or diminished levels of progesterone is the cause of DUB.
Ответ:
It is called the eye.