【单选题】Complete transection of the brainstem above the pons
A.
Result in cessation of all breathing movements
B.
Prevent any voluntary holding of breath
C.
Prevent the central chemoreceptors from exerting any control over ventilation
D.
Prevent the peripheral chemoreceptors from exerting any control over ventila- tion
E.
Abolish the Hering-Breuer reflex
【多选题】Which of the following statements about the pons of the brain stem are correct?
A.
Like the medulla, the pons plays a vital role in communication as it contains all of the neurons that connect the higher regions of the brain to the medulla & spinal cord.
B.
The pons also acts as a bridge which connect the left & right hemispheres of the cerebellum to one another.
C.
The pons acts as a bridge connecting the cerebellum to the other regions of the brain.
D.
Several nuclei in the pons work with the medullary rhythmicity center to control breathing, while other nuclei form the roots of several cranial nerves.
【单选题】The effect of penumotaxic center in the upper pons is to
A.
transfer from inspiration to expiration.
B.
enhance the inspiration
C.
directly innervate the respiratory muscle.
D.
excite the apneustic center in medulla
E.
generate basic respiratory rhythm.
【单选题】粗过滤是指原奶经过()孔径的滤网过滤,去除原奶中的机械杂质
【单选题】评估基准日应根据经济行为的性质由 确定,并尽可能与评估目的的实现日接近。
【单选题】驱动电梯运行的曳引力是曳引钢丝绳与曳引轮绳槽之间的( )。
【简答题】评估基准日应根据经济行为的性质由( )确定,并尽可能与评估目的的实现日接近。