Which one of the following is likely to happen in his neuro-hormonal control system of a person who encounters an emergency condition suddenly like finding a lion in front of him

Options

A. Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla
B. Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse
C. Hypothalamus activates the parasympathetic division of brain
D. Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex

Explanation

To answer the question regarding what is likely to happen in the neuro-hormonal control system of a person who suddenly encounters an emergency condition, such as finding a lion in front of him, we can break down the response into several steps:

### Step-by-Step Solution:

1. **Understanding the Emergency Response**:
- When a person encounters a sudden threat, the body activates its "fight or flight" response. This is a physiological reaction that prepares the body to either confront or flee from the danger.

2. **Activation of the Sympathetic Nervous System**:
- The sympathetic nervous system (SNS) is the part of the autonomic nervous system that is responsible for the body's rapid involuntary response to dangerous or stressful situations. Upon encountering a lion, the SNS is activated.

3. **Release of Hormones**:
- The activation of the SNS leads to the stimulation of the adrenal medulla, which is the inner part of the adrenal glands. This results in the release of two key hormones: epinephrine (also known as adrenaline) and norepinephrine (noradrenaline).

4. **Physiological Effects of Epinephrine and Norepinephrine**:
- The release of these hormones causes several physiological changes:
- **Increased Heart Rate**: The heart beats faster to pump more blood to muscles.
- **Increased Respiratory Rate**: Breathing becomes faster to supply more oxygen to the body.
- **Pupillary Dilation**: The pupils dilate to enhance vision.
- **Increased Blood Glucose Levels**: The liver breaks down glycogen to glucose, providing immediate energy.
- **Increased Blood Flow to Muscles**: Blood is redirected from non-essential functions to the muscles.

5. **Conclusion**:
- Therefore, the correct response in this neuro-hormonal control system during such an emergency is that the sympathetic nervous system is activated, leading to the release of epinephrine and norepinephrine from the adrenal medulla.

### Final Answer:
The correct option is: The sympathetic nervous system is activated and releases epinephrine and norepinephrine from the adrenal medulla.

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