Which of the following hormones is mismatched with the stated functions ?

Options

A. ACTH - Stimulates the adrenal cortex
B. Oxytocin- Stimulates water reabsorption by the kidneys
C. Prolactin (PRL) - regulates the growth of mammary glands and milk prduction in them
D. TSH- Promotes the synthesis and secretion of thyroid homones from thyroid gland

Answer

To solve the question regarding which hormone is mismatched with its stated function, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Hormones and Their Functions**:
- We will look at each hormone mentioned and its corresponding function to determine if they are correctly matched.

2. **Examine ACTH (Adrenocorticotropic Hormone)**:
- ACTH is known to stimulate the adrenal cortex to produce cortisol.
- **Conclusion**: This statement is correct.

3. **Examine Oxytocin**:
- Oxytocin is often referred to as the "birth hormone" because it stimulates contractions during childbirth and also facilitates milk ejection during breastfeeding.
- The statement mentions that Oxytocin stimulates water reabsorption by the kidney, which is incorrect. This function is associated with ADH (Antidiuretic Hormone).
- **Conclusion**: This statement is incorrect.

4. **Examine Prolactin**:
- Prolactin is responsible for the growth of mammary glands and the production of milk.
- **Conclusion**: This statement is correct.

5. **Examine TSH (Thyroid Stimulating Hormone)**:
- TSH stimulates the thyroid gland to produce thyroid hormones (T3 and T4).
- **Conclusion**: This statement is correct.

6. **Final Assessment**:
- Based on the analysis, the only mismatched hormone with its function is Oxytocin, which is incorrectly stated to stimulate water reabsorption by the kidney.

### Answer:
The hormone that is mismatched with its stated function is **Oxytocin**.

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