4. There you are, camped along the mighty Amazon River you Cai one night by the

Question

4. There you are, camped along the mighty Amazon River you Cai one night by the steamy breath of a very hungry 15-foot Black Calmare awakened Alligator) looming over your sleeping bag. I've seen Caimans snatch running at a full gallop so you've to run much faster than a chicken. How w body handle this physiological emergency? A. Fire up the Sympathetic Nervous System. B. Inhibit the Parasympathetic Vagus Nerve. C. Stimulate ß (beta)-adrenergic receptors on the heart. D. All of the above. E. Assuming you have your credit card and a telephone handy, I'm sure that for a measly $5 a minute, a gifted psychic at the Psychic Yahoo Network could tell you whether or not you'll be Caiman lunch. Hey! Wait a minute...if they're so "gifted", how come they didn't already know you were going to call so they could have warned you beforehand? Likewise, shouldn't they be able to divine your credit card number? iman (a tropical chicken ll y our

Explanation / Answer

Ans.

The choice is: (D), All of the above.

Seeing the Black Caiman, Sympathetic nervous system gets fired up because it stimulates body flight and fight response. Secondly, Parasympathetic vagus nerve gets inhibited because Parasympathetic system is activated at rest but since in this scenario the person has to run from danger hence Parasympathetic vagus nerve has to be inhibited. Thirdly, beta adrenergic receptors on heart gets stimulated to increase the heart rate so that more blood can be pumped to supply more oxygen to the muscles for running away from the scene of danger.

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