所屬科目:研究所、轉學考(插大)-普通生物學
18. Anesthetics block pain by blocking the transmission of nerve signals. Which of the following chemicals might work as anesthetics? (A) a chemical that opens thechannels at nerve terminals (B) a chemical that inhibits the enzymes that degrade neurotransmitters (C) a chemical that stimulates the free nerve endings of nociceptor afferent fibers (D) a chemical that prevents the opening of voltage-gated Na* channels in membrane (E) a chemical that inhibits the reuptake of neurotransmitters by transporters