The primary force of pulmonary ventilation is []
A. Expansion and contraction of the lungs
B. Expansion and contraction of the thorax
C. respiratory movement
Difference between intrathoracic pressure and atmospheric pressure
E. Pressure difference between the inside and outside of the trachea
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What is not happened during eupnea? []
A. Contraction of the external intercostal muscles during inspiration
B. Contraction of the diaphragm muscles during inspiration
Contraction of the internal intercostal muscles during expiration
D. Natural return of the thorax during expiration
E. The effect of the external intercostal muscles is less than that of the diaphragm
The principle of artificial respiration is caused []
A. Pressure difference between intrapulmonary pressure and pleural cavity pressure
B. Pressure difference between intrapulmonary pressure and atmospheric pressure
C. respiratory movement
D. Pressure difference between pleural cavity pressure and atmospheric pressure
E. Pressure difference between intrapulmonary pressure and intra-abdominal pressure
Which is wrong about intrapleural pressure? []
A. It is equal to the difference between the intrapulmonary pressure and the lung retraction pressure
B. It is always lower than the atmospheric pressure
C. It can be expressed indirectly by the pressure of the esophagus
D. It is beneficial to maintaining the expanded state of the lung
E. It is beneficial to the return of venous blood
The main component of bile involved in digestion and absorption is []
A. Digestive enzymes
Bile salt
C. Lecithin
D. Bile pigment
E. Fatty acids
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