Question

The bronchioles continue to divide, making smaller and smaller tubes. They may divide up to how many times before becoming air ducts?

Answer 1

Answer:

The bronchioles continue to divide about 15-20 times before becoming air ducts. The air ducts are called bronchi, and they are the final branches of the bronchial tree. The bronchi lead to the alveoli, which are the tiny air sacs where gas exchange takes place.