Question

which of the following is not a part of the process of respiration?
a external respiration
b thoracic respiration
c ventilation
d internal respiration

Explanation:

Respiration includes external respiration (gas - exchange between air and blood), ventilation (breathing in and out), and internal respiration (gas - exchange between blood and tissues). Thoracic respiration is not a recognized part of the standard respiration process in biology.

Answer:

B. thoracic respiration