Use the drop-down menus to complete the sentences. Air first enters the lower respiratory system through the . The are the sacs at the end of the bronchioles. The branch off from the trachea; one enters each lung.
Answer
Selection 1:
trachea
Selection 2:
alveoli
Selection 3:
bronchial tubes

Question

Use the drop-down menus to complete the sentences. Air first enters the lower respiratory system through the . The are the sacs at the end of the bronchioles. The branch off from the trachea; one enters each lung.

Answer

Selection 1:

trachea

Selection 2:

alveoli

Selection 3:

bronchial tubes

Revolt · Accepted Answer

trachea; Selection 1: trachea; Selection 2: alveoli; Selection 3: bronchial tubes