According to the passage which of the following is one of the first things to occur when
公共英语
已帮助 人
According to the passage, which of the following is one of the first things to occur when cells are injured？
A．The flow of electrical impulses through nerve cells at the site of the injury is broken.
B．The production of substance P traveling through nerve cells to the brain increases.
C．Endorphins begin to speed up the response of nerve cells at the site of the injury.
D．A flood of prostaglandins sensitizes nerve endings at the site of the injury.
E．Nerve cells connected to the spinal cord become electrically quiescent.
请帮忙给出正确答案和分析，谢谢！
-
正确答案：D
细胞受伤后，哪个最先发生?最先发生的，应为原文第二段的描写。∴D正确。前列腺素刺激受伤部位神经末梢。见原文L8—10。A．“electrical impulses”第三段内容。B．“substance P”第三段内容。C．“endorphins”第四段内容。E．神经细胞变得无法放电信号。第三段内容。