Chemical nature of all the hormone which are secreted from pituitary and hypothalamus is

Answer

### Step-by-Step Solution:

1. **Understanding the Glands**: The question pertains to the hormones secreted by the pituitary gland and the hypothalamus. The pituitary gland is divided into two lobes: the anterior lobe and the posterior lobe.

2. **Identifying the Hormones**: The hormones secreted by the anterior lobe include:
- Growth Hormone (GH)
- Prolactin (PRL)
- Adrenocorticotropic Hormone (ACTH)
- Thyroid-Stimulating Hormone (TSH)
- Luteinizing Hormone (LH)
- Follicle-Stimulating Hormone (FSH)

The posterior lobe secretes:
- Oxytocin
- Antidiuretic Hormone (ADH, also known as Vasopressin)

3. **Chemical Nature of the Hormones**: The hormones released by both the pituitary and hypothalamus are primarily proteins or polypeptides. This means they are made up of chains of amino acids.

4. **Conclusion**: Therefore, the chemical nature of all the hormones secreted from the pituitary and hypothalamus is that they are proteins or polypeptides.

### Final Answer:
The hormones secreted from the pituitary and hypothalamus are chemically proteins or polypeptides.

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