29.
Gases are transported between the alveoli and the individual cells by the
cardiovascular system. Some of the gases are dissolved directly in the plasma of the
blood. However, in humans; the greater percentage of the gases is carried within the
substance of the RBCs. Within these cells, there is a substance that readily accepts
and gives up oxygen; this substance is called hemoglobin. (para 7-40e)
30.
In "mouth-to-mouth" resuscitation, the initial air forced into the patient is the
"dead air," which still has its full amount of oxygen. (para 7-41b)
End of Lesson 7
MD0007
7-31