The diagram below is an illustration of some structures used for gaseous exchange in humans. Study it and answer the question.
the part labeled III can be found in the
A.
lung
B.
heart
C.
kidney
D.
sternum
Correct answer is A
Bronchioles are small, narrow tubes that are part of the respiratory system and are found within the lungs. After the air passes through the trachea and bronchi, it enters the bronchioles, which represent the smaller airways within the lungs.