Krishna was going to school and on the way he saw a major bus accident

1.	Krishna was going to school and on the way he saw a major bus accident. His heartbeat increased and hands and feet become cold. Name the part of the nervous system that had a role to play in this reaction.
Answer» 1. The symptoms observed in Krishna were due to sympathetic nervous system. Emergency conditions trigger sympathetic nervous system to stimulate adrenal medulla. 2. The cells of adrenal medulla secrete catecholamines like adrenaline and nor¬adrenaline. 3. These hormones have direct effect on the pacemaker of the heart which causes increase in the heart rate and other associated symptoms. 4. This is a typical fright reaction caused by intervention of sympathetic nervous system

Krishna was going to school and on the way he saw a major bus accident. His heartbeat increased and hands and feet become cold. Name the part of the nervous system that had a role to play in this reaction.

Answer»

1. The symptoms observed in Krishna were due to sympathetic nervous system. Emergency conditions trigger sympathetic nervous system to stimulate adrenal medulla.

2. The cells of adrenal medulla secrete catecholamines like adrenaline and nor¬adrenaline.

3. These hormones have direct effect on the pacemaker of the heart which causes increase in the heart rate and other associated symptoms.

4. This is a typical fright reaction caused by intervention of sympathetic nervous system

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Krishna was going to school and on the way he saw a major bus accident. His heartbeat increased and hands and feet become cold. Name the part of the nervous system that had a role to play in this reaction.

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