Bronchioles have muscular walls that can contract to constrict the bronchiole, allowing control over airflow into the alveoli.
I bronchioli hanno pareti muscolari che possono contrarsi per restringere il bronchiole, consentendo di controllare il flusso d'aria verso gli alveoli.
| Front | Why do bronchioles have muscle walls? |
|---|---|
| Back | - contract to constrict bronchiole - to control air flow in and out of alveoli |
Tags: gas_exchange
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