The brain waves of normal adults working during the day are []
A. α wave
B. α wave block
C. β wave
D. δ wave
E. θ wave
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How does the rabbit's breathing change after cutting off the bilateral cervical vagus nerves? []
A. The frequency increases and the amplitude decreases
B. The frequency increases and the amplitude increase
C. The frequency and amplitude remain unchanged
D. The frequency decreases and the amplitude decrease
E. The frequency decreases and the amplitude increase
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
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
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