Final answer:
Bronchial breath sounds are the breath sounds anteriorly heard directly over the mainstem bronchi between the first and second ribs.
Step-by-step explanation:
The breath sound anteriorly heard directly over the mainstem bronchi between the first and second ribs is Bronchial breath sounds. These are harsh, loud sounds that resemble blowing through a hollow tube. They are heard over the mainstem bronchi and are normally only heard in this area.