Which of the following is only an endocrine gland with no other function ?

Options

A. Liver
B. Ovary
C. Pancreas
D. Thyroid gland

Answer

To determine which of the following options is only an endocrine gland with no other function, we will analyze each option provided:

1. **Option A: Liver**
- The liver is classified as a mixed gland. It has both endocrine and exocrine functions.
- As an exocrine gland, it produces bile, which is important for digestion.
- As an endocrine gland, it secretes hormones such as angiotensinogen and insulin-like growth factors.
- Therefore, the liver is not the correct answer.

2. **Option B: Ovary**
- The ovary is also a mixed gland.
- It functions as an endocrine gland by producing hormones such as progesterone and relaxin.
- Additionally, it has exocrine functions as it releases ova (eggs) during ovulation.
- Thus, the ovary is not the correct answer.

3. **Option C: Pancreas**
- The pancreas is another mixed gland.
- It has exocrine functions where it secretes digestive enzymes into the small intestine.
- As an endocrine gland, it produces hormones such as insulin and glucagon.
- Therefore, the pancreas is not the correct answer.

4. **Option D: Thyroid**
- The thyroid gland is primarily an endocrine gland.
- It produces hormones such as T3 (triiodothyronine), T4 (thyroxine), and calcitonin, which are involved in metabolism and calcium regulation.
- The thyroid does not have any significant exocrine functions.
- Thus, the thyroid gland is the correct answer.

**Final Answer: Option D: Thyroid gland.**

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