Bronchioles and Alveoli

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4 Terms

1
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What is the structure of the bronchioles like?

There is no cartilage, only smooth muscle

2
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What does autonomic control regulate?

Smooth muscle, controlling the diameter of bronchioles, and airflow and resistance in the lungs

3
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What is bronchodilation?

Dilation (widening) of bronchial airways, caused by sympathetic ANS activation, reducing resistance (fight or flight response)

4
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What is bronchoconstriction?

Constriction of bronchi, caused by parasympathetic ANS activation (rest and digest response) or histamine release in allergic reactions