During emergency piloerection ,sweating ,dilation of pupil are due to
thyroxine,insulin
insulin,glucagon
catecholamines
corticoids

Options

A. thyroxine,insulin
B. insulin,glucagon
C. catecholamines
D. corticoids

Answer

To solve the question regarding the physiological responses during an emergency, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Context**: The question asks about the physiological responses (piloerection, sweating, and dilation of pupils) during an emergency situation.

2. **Identifying the Hormones**: We need to identify which hormones are responsible for these responses. The options provided are:
- Thyroxine
- Insulin
- Insulin and Glucagon
- Catecholamines
- Corticoids

3. **Recognizing Emergency Responses**: During emergencies, the body activates its "fight or flight" response, which is characterized by various physiological changes to prepare the body for action.

4. **Role of Catecholamines**: The hormones primarily responsible for these emergency responses are catecholamines, specifically epinephrine (adrenaline) and norepinephrine (noradrenaline). These hormones are secreted by the adrenal medulla in response to stress.

5. **Effects of Catecholamines**: When catecholamines are released, they lead to:
- Increased heart rate (to pump more blood)
- Sweating (to cool the body)
- Piloerection (raising of hair)
- Dilation of pupils (to enhance vision)

6. **Conclusion**: Given that catecholamines are the hormones responsible for the described physiological responses during emergencies, the correct answer to the question is **catecholamines** (option c).

### Final Answer:
The correct answer is **catecholamines**.

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