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Explain the role played by the Autonomic Nervous System in controlling the diameter of bronchi &...

Explain the role played by the Autonomic Nervous System in controlling the diameter of bronchi & bronchioles

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Answer #1

Role of autonomic nervous system on bronchi and bronchioles are

1. Sympathetic nervous system causes the dilatation of bronchi and bronchioles.

beta 2 receptors which are present in the bronchi and bronchioles helps in dilatation through adrenaline, beta2 receptors agonists.

2. Parasympathetic nervous system causes the constriction of bronchi and bronchioles.

m3 ( muscurainic receptors) which are present in the bronchi and bronchioles helps in construction through acetylcholine.

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