Question

Q: In mouth-to-mouth artificial respiration, the rescuer blows air from his or her own respiratory system into that of the victim. For each of the following statements, state whether it is true or false, and then explain your answer.

A. Expansion of the victim’s lungs is brought about by blowing air into the lung at higher than atmospheric pressure.

B. The partial pressure of oxygen in the victim's lungs at the end of ‘inhalation’ will be the same as with normal breathing.

Answer 1

A. True

     The expansion of the persons lung is brought by giving artificial ventilation into the lung will be higher than atmospheric pressure. Then only the lungs will expand to intake ineff gas inside.

B. False

   The partial pressure of ixygen in the victims lungs at the end of inspiration will not be the same as with the normal breathing. After when the victim makes him or herself to take breath by his or her own, the partial pressure of oxygen intake will be more becuase when the partial pressure of oxygen has decreased, less oxygen is present in the alveoli of the lungs. Thus inorder to attain maximum oxygen, the victim inhales high volume of oxygen in the end of inhalation.