Internal respiration can be defined as:
A) the exchange of gases between the lung and the blood capillaries in the lung.
B) pulmonary ventilation.
C) the exchange of gases between the blood capillaries and the tissues cells.
D) both A and B.

Question

Quizplus · Accepted Answer

Internal respiration refers to the exchange of gases (oxygen and carbon dioxide) between the blood capillaries and the tissue cells, which occurs at the cellular level in the body's tissues. It is distinct from external respiration, which is the exchange of gases between the lungs and the bloodstream.

Internal Respiration Can Be Defined As