16.由于埋藏電極在腦內(nèi)相應(yīng)部位，動物會出現(xiàn)持續(xù)反復(fù)按壓杠桿以便不斷得到腦內(nèi)的電刺激的現(xiàn)象，這一相應(yīng)的腦結(jié)構(gòu)被稱為(      )
A.興奮中樞                                                    B.懲罰中樞
C.憤怒中樞                                                    D.獎勵中樞
17.橫橋變化與橫紋肌收縮所耗掉的能量是由以下哪項提供的(      )
A.三磷酸腺苷                                                B.下丘腦性兩形核
C.下丘腦腹內(nèi)側(cè)核                                         D.顳葉皮層
18.神經(jīng)肌肉接點由神經(jīng)末梢一再分支并膨大而成為(      )
A.板簾                                                           B.終板
C.腰段                                                           D.隔區(qū)
19.巴甫洛夫認為，神經(jīng)活動類型中的活潑型相當(dāng)于氣質(zhì)類型中的(      )
A.膽汁質(zhì)                                                       B.多血質(zhì)
C.抑郁質(zhì)                                                       D.粘液質(zhì)
20.個體間生理差異中最顯著的表現(xiàn)是(      )
A.性別差異                                                    B.人格差異
C.技能差異                                                    D.身形差異