The primary center of micturition reflex is located in ()
A. cerebral cortex
B. hypothalamus
C. medulla oblongata
D. midbrain
E. sacral spine
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The main part of concentrated urine is in ()
A. proximal tubule
B. distal tubule
C. loop of Henle
D. collecting duct
E. glomerulus
The normal final urine volume accounts for ( ) about the original urine volume ()
A. 1%
B. 10%
C. 20%
D. 30%
E. 65%
The respiration is ()
A. the summation of expiration and inspiration
B. the process that gas comes in and out of lung
C. the gas exchange between pulmonary alveoli and blood
D. the gas exchange between body and the external environment
E. the process that gas comes in and out histiocytes
In which phase below, the intrapulmonary- pressure equals to atmosphere pressure ()
A. at the beginning of expiration and inspiration
B. at the end of inspiration and the beginning of expiration
C. at the beginning of inspiration and the end of expiration
D. at the end of expiration and the beginning of inspiration
E. at the end of expiration and the end of inspiration
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