Which of the following match is correct ?
`{:(,"Hormone","Effect"),((a),"Oxytocin","Milk ejection hormone"),((b),"Glucagon","Decreases blood sugar level"),((c ),"Adrenaline","Decreases heart rate"),((d),"Thyroxine","Decreases BMR"):}`

Explanation

To solve the question regarding the correct match between hormones and their effects, we will analyze each option one by one.

### Step 1: Analyze the first option - Oxytocin
- **Statement**: Oxytocin is a milk ejection hormone.
- **Explanation**: Oxytocin is indeed responsible for the ejection of milk from the mammary glands during breastfeeding. It stimulates the contraction of myoepithelial cells around the alveoli in the breast, leading to milk ejection.
- **Conclusion**: This statement is **correct**.

### Step 2: Analyze the second option - Glucagon
- **Statement**: Glucagon decreases blood sugar level.
- **Explanation**: Glucagon is a hormone produced by the alpha cells of the pancreas. Its primary function is to increase blood sugar levels by promoting glycogenolysis (the breakdown of glycogen to glucose) and gluconeogenesis (the production of glucose from non-carbohydrate sources). Therefore, it does not decrease blood sugar levels.
- **Conclusion**: This statement is **incorrect**.

### Step 3: Analyze the third option - Adrenaline
- **Statement**: Adrenaline decreases heart rate.
- **Explanation**: Adrenaline, also known as epinephrine, is released from the adrenal glands and is responsible for the "fight or flight" response. It increases heart rate, blood pressure, and energy availability. Thus, it does not decrease heart rate.
- **Conclusion**: This statement is **incorrect**.

### Step 4: Analyze the fourth option - Thyroxine
- **Statement**: Thyroxine decreases BMR (Basal Metabolic Rate).
- **Explanation**: Thyroxine (T4) is produced by the thyroid gland and plays a crucial role in regulating metabolism. It actually increases the BMR, promoting metabolic processes in the body. Therefore, this statement is also incorrect.
- **Conclusion**: This statement is **incorrect**.

### Final Conclusion
After analyzing all the options, the only correct match is:
- **Oxytocin** - **Milk ejection hormone**.

Thus, the answer to the question is the first option: **Oxytocin is a milk ejection hormone**.

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