Which one exclusively comprises endocrine glands

Options

A. Pituitary, salivary, adrenals, ovary, testis
B. Pituitary, thyroid, adrenals, ovary, testis
C. Salivary, thyroid, adrenals, ovary, testis
D. Adrenels, ovary, testis, salivar, liver

Answer

To determine which option exclusively comprises endocrine glands, we need to identify the glands mentioned and classify them based on whether they are endocrine or not.

### Step-by-Step Solution:

1. **Understanding Endocrine Glands**:
- Endocrine glands are ductless glands that secrete hormones directly into the bloodstream. These hormones travel to target organs to regulate various bodily functions.

2. **Identifying the Glands**:
- The question likely provides a list of glands to choose from. Common endocrine glands include:
- Pituitary Gland
- Thyroid Gland
- Adrenal Glands
- Ovaries
- Testes

3. **Analyzing Each Gland**:
- **Pituitary Gland**: Known as the "master gland," it regulates other endocrine glands and is an endocrine gland.
- **Thyroid Gland**: Secretes thyroxin, which regulates metabolism; it is also an endocrine gland.
- **Adrenal Glands**: Composed of adrenal cortex and adrenal medulla, secreting hormones like cortisol and adrenaline; they are endocrine glands.
- **Ovaries**: Produce estrogen, a female sex hormone; they are endocrine glands.
- **Testes**: Produce testosterone, a male sex hormone; they are endocrine glands.
- **Salivary Glands**: These are not endocrine glands as they secrete saliva through ducts.

4. **Conclusion**:
- The correct answer must include only those glands that are classified as endocrine glands. Therefore, if the options include the pituitary, thyroid, adrenal glands, ovaries, and testes, that option exclusively comprises endocrine glands.

### Final Answer:
The option that includes the pituitary gland, thyroid gland, adrenal glands, ovaries, and testes exclusively comprises endocrine glands.

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