Progesterone is secreted by the cells of

Options

A. Corpus luteum
B. Corpus callosum
C. Corpus albicans
D. Macula lutea

Answer

**Step-by-Step Solution:**

1. **Understanding Progesterone**: Progesterone is a steroid hormone that plays a crucial role in the female reproductive system. It is primarily involved in regulating the menstrual cycle and maintaining the early stages of pregnancy.

2. **Identifying the Source**: The question asks where progesterone is secreted from. The options provided are:
- Corpus luteum
- Corpus callosum
- Corpus albicans
- Macular luteum

3. **Evaluating Each Option**:
- **Corpus Luteum**: This is a structure that forms in the ovary after an egg has been released. It is responsible for secreting progesterone, especially during the luteal phase of the menstrual cycle.
- **Corpus Callosum**: This is a part of the brain that connects the two hemispheres. It does not secrete hormones, making it an incorrect option.
- **Corpus Albicans**: This is the scar tissue that forms from the degeneration of the corpus luteum if pregnancy does not occur. It does not produce progesterone, hence it is incorrect.
- **Macular Luteum**: This is a part of the retina in the eye and has no relation to hormone secretion, making it another incorrect option.

4. **Conclusion**: Based on the evaluation, the correct answer is that progesterone is secreted by the cells of the **corpus luteum**.

**Final Answer**: Progesterone is secreted by the cells of the **corpus luteum**.

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