Question

multiple choice question
which represents a proper path for incoming air flow?
o intralobular bronchioles to terminal bronchioles
o segmental bronchi to lobar bronchi
o intralobular bronchioles to lobar bronchi
o terminal bronchioles to intralobular bronchioles

Explanation:

The respiratory system's bronchial tree has a hierarchical structure. Terminal bronchioles are more distal than intralobular bronchioles. Air flows from larger (more proximal) to smaller (more distal) structures. Terminal bronchioles branch into intralobular bronchioles.

• For the first option: Intralobular bronchioles are more distal than terminal bronchioles, so air does not flow from intralobular to terminal.
• For the second option: Segmental bronchi are more distal than lobar bronchi, so air does not flow from segmental to lobar.
• For the third option: Intralobular bronchioles are more distal than lobar bronchi, so air does not flow from intralobular to lobar.
• For the fourth option: Terminal bronchioles (more proximal) lead to intralobular bronchioles (more distal) which is the correct flow direction.

Answer:

terminal bronchioles to intralobular bronchioles