Answer:
Crackles are audible in the posterior bases bilaterally and they are abnormal.
Explanation:
The lungs auscultation may be defined as the medical process o listening of the different lung sounds by the physician. The lungs disease can be diagnosed by listening the sounds.
The inspiration process produces the high and popping sounds that are intermittent known as crackles. The alveoli gets open fully and the air moves inside during these sounds production. This sound represent the deep inspiration.
