Select the mismatched pair from the following.

Options

A. Glucagon- glycogenolysis
B. Prolactin - milk production
C. Insulin - Gluconeogenesis
D. Oxytocin- Contraction of uterine muscles.

Answer

To solve the question of selecting the mismatched pair of hormones and their functions, we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Hormones and Their Functions**:
We have four hormones and their corresponding functions to evaluate.

2. **Evaluate Each Pair**:
- **Glucagon**: This hormone is secreted by the alpha cells of the pancreas and is responsible for glycogenolysis, which is the conversion of stored glycogen into glucose. This pair is **correct**.
- **Prolactin**: This hormone is secreted by the pituitary gland and is responsible for milk production. This pair is also **correct**.
- **Insulin**: This hormone is secreted by the beta cells of the pancreas. However, it is responsible for glycogenesis (the conversion of glucose into glycogen) and not gluconeogenesis (the production of glucose from non-carbohydrate sources). Therefore, this pair is **incorrect**.
- **Oxytocin**: This hormone is secreted by the pituitary gland and is responsible for the contraction of uterine muscles during childbirth. This pair is **correct**.

3. **Conclusion**:
The mismatched pair is **Insulin - Gluconeogenesis**. Insulin does not perform gluconeogenesis; it is involved in glycogenesis instead.

### Final Answer:
The mismatched pair is **Insulin - Gluconeogenesis**.

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