Animals must run a medium carrying oxygen past respiratory membranes to obtain oxygen in a process known as external respiration, or Blank______.Multiple choice question.oxygenationventilationinhalationinternal respiration

Gas exchange that occurs between tissues of the body and the blood is called Blank______.Multiple choice question.external respirationventilationinternal respirationrespiration

Multiple Choice QuestionCarbon dioxide diffuses from the ______ to the ______ during external respiration.Multiple choice question.blood; alveolar airalveolar air; blood

The partial pressure of oxygen in the tissue fluid is lower than that of the blood because the tissue cells are using oxygen as a reactant in Blank______.Multiple choice question.external respirationfermentationcellular respirationinternal respiration

Gas exchange between air in the alveoli and blood in pulmonary capillaries is called Blank______.Multiple choice question.cellular respirationinternal respirationexternal respiration

Breathing or respiration is accomplished by muscles of the Blank______.Multiple choice question.quadratus lumborumlower limbspelvisthorax