Estrogen

A

Stimulates the growth of ovarian follicle

B

Stimulate the appearance of secondary sex characters

C

Stimulate the growth of mammary gland

D

All of the above

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Estrogen**: Estrogen is a category of sex hormone primarily produced by the ovaries in females. It plays a crucial role in the development and regulation of the female reproductive system. **Hint**: Remember that estrogen is a sex hormone and is mainly associated with female reproductive health. 2. **Production and Regulation**: Estrogen is secreted by the ovaries and its production is regulated by the Follicle Stimulating Hormone (FSH), which is secreted by the pituitary gland. This indicates that the secretion of estrogen is controlled by another hormone. **Hint**: Think about how hormones interact with each other in the endocrine system. 3. **Functions of Estrogen**: Estrogen has several important functions, including: - Stimulating the growth of ovarian follicles. - Stimulating the growth and activities of female sex organs. - Promoting the development of mammary glands. - Contributing to the appearance of female secondary sexual characteristics. **Hint**: List out the functions of estrogen to see how it influences different aspects of female physiology. 4. **Analyzing the Options**: The question provides four options: - Stimulates the growth of ovarian follicles. - Stimulates the appearance of secondary sex characteristics. - Stimulates the growth of mammary glands. - All of the above. **Hint**: Check if each individual option aligns with the functions of estrogen discussed. 5. **Selecting the Correct Answer**: Since all the functions mentioned in the options are indeed correct and pertain to the role of estrogen, the best choice is "All of the above". **Hint**: When faced with multiple correct answers, look for the option that encompasses all the correct statements. ### Final Answer: The correct option is **All of the above**.
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