Hormone secreted by pituitary gland are chemically

Options

A. All protein
B. All steroid
C. Complex compounds of proteins and carbohydrates
D. Some steroid and some protein

Answer

**Step-by-Step Solution:**

1. **Identify the Source of Hormones**: The question asks about the hormones secreted by the pituitary gland. The pituitary gland is often referred to as the "master gland" because it regulates various bodily functions by releasing hormones.

2. **Classify Hormones**: Hormones can be classified based on their chemical structure. The main categories include protein hormones, steroid hormones, and amino acid derivatives.

3. **Focus on Pituitary Hormones**: The hormones secreted by the pituitary gland primarily belong to the category of protein hormones. These include various peptide and polypeptide hormones.

4. **Examples of Pituitary Hormones**: Some examples of hormones released by the pituitary gland include:
- Growth Hormone (GH)
- Prolactin (PRL)
- Adrenocorticotropic Hormone (ACTH)
- Thyroid-Stimulating Hormone (TSH)
- Luteinizing Hormone (LH)
- Follicle-Stimulating Hormone (FSH)

5. **Conclusion**: Based on the classification and examples, the hormones secreted by the pituitary gland are primarily protein hormones. Therefore, the correct answer to the question is that the hormones secreted by the pituitary gland are chemically "all protein".

**Final Answer**: All protein.

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