Emphysema caused by damage to alveoli from toxins and pollutants is likely to result in the body having difficulty performing which of the following actions?
Releasing histamine and acetylcholine
Exchanging oxygen and carbon dioxide
Absorbing food
Producing enzymes
The Correct Answer is B
Emphysema is a lung condition that is caused by damage to the alveoli, the tiny air sacs in the lungs where gas exchange occurs. When the alveoli are damaged, the body has difficulty exchanging oxygen and carbon dioxide. This can lead to shortness of breath and other respiratory problems. The other options are not directly related to the function of the alveoli or the effects of emphysema.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Heart and lungs. The thoracic cavity contains the heart and lungs, which are at greatest risk from severe blunt trauma to this area.
B. The brain and spinal cord are not located in the thoracic cavity and are therefore not at greatest risk from blunt trauma to this area.
C. The liver and stomach are located in the abdominal cavity, which is below the thoracic cavity. While these organs may be affected by severe blunt trauma to the thoracic cavity, they are not at the greatest risk.
D. The large and small intestines are also located in the abdominal cavity and are not at the greatest risk from blunt trauma to the thoracic cavity.
Correct Answer is D
Explanation
Carbonic acid. When blood pH rises, carbonic acid can donate H+ ions to act as a buffer and help maintain the pH within a normal range. Carbonic acid is formed when carbon dioxide dissolves in water and reacts with it.
A. Oxygen is not responsible for donating H+ ions to act as a buffer when blood pH rises.
B. Carbon monoxide is a toxic gas that does not play a role in buffering blood pH.
C. Carbon dioxide can dissolve in water to form carbonic acid, which can then donate H+ ions to act as a buffer.
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