It can be inferred from the passage that if th
问题详情
It can be inferred from the passage that if the prostaglandin synthetase is only partially blocked, which of the following is likely to be true?
A.Some endorphins will be produced, and some pain signals will be intensified.
B.Some substance P is likely to be produced , so some pain signals will reach the brain.
C.Some sodium ions will be blocked, so some pain signals will not reach the brain.
D.Some prostaglandins will be produced, but production of substance P will be prevented.
E.Some peptides in the brain will receive pain signals and begin to regulate incoming pain traffic.请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:B
如果前列腺素合成只是部分受阻,下面哪个将会发生?前列腺素只部分受阻,意味着痛信号将向脊髓传播。∴B正确。一些P物质会产生,一些痛信号将抵达脑神经L28—31,这正是原文第三段内容。A.“endorphins”是否产生和痛信号如何并没有直接联系。C.一些钠离子被阻碍。这是使用局麻药的后果,和痛信号无直接联系。D.P物质制造将被阻止。说反了。E.peptides接收痛信号并调节痛传输。文中无。