Final answer:
Physiological dead space is the term used to describe the entry of gases into the bloodstream as a result of a damaged lung. This occurs when a region of lung tissue is unable to participate in gas exchange due to a structural defect. It can be caused by a puncture wound or a genetic condition.
Step-by-step explanation:
When gases enter the bloodstream as a result of a damaged lung, it is called a physiological dead space. This occurs when there is a region of lung tissue that is not involved in gas exchange due to a defect in its structure. It could be caused by a puncture wound or a genetic condition.