Which of the following is both (mixed) exo and endocrine gland

Options

A. Thyroid
B. Pituitary
C. Adrenal
D. Pancreas.

Answer

To determine which of the following is both a mixed exocrine and endocrine gland, we need to analyze the options provided: thyroid, pituitary, adrenal, and pancreas.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Endocrine Glands**: These are ductless glands that secrete hormones directly into the bloodstream. Examples include the thyroid and pituitary glands.
- **Exocrine Glands**: These glands have ducts and their secretions reach their target through these ducts. Examples include salivary glands and sweat glands.

2. **Identify Mixed Glands**:
- A **mixed gland** is one that has both endocrine and exocrine functions. This means it can secrete hormones into the bloodstream (endocrine) and also produce substances that are released through ducts (exocrine).

3. **Examine Each Option**:
- **Thyroid Gland**: This is an endocrine gland that secretes hormones like thyroxine but does not have exocrine functions.
- **Pituitary Gland**: This is also an endocrine gland that secretes various hormones but lacks exocrine functions.
- **Adrenal Gland**: This gland primarily functions as an endocrine gland, producing hormones like adrenaline and cortisol, but does not have exocrine functions.
- **Pancreas**: The pancreas is unique as it has both functions. It secretes insulin and glucagon (endocrine) into the bloodstream and also produces pancreatic juice (exocrine) that aids in digestion.

4. **Conclusion**:
- Among the options provided, the **pancreas** is the only gland that functions as both an exocrine and an endocrine gland.

### Final Answer:
The gland that is both a mixed exocrine and endocrine gland is the **pancreas**.

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