研究人员在室温条件下对实验小白鼠进行以下处理:切除甲鼠大脑皮

研究人员在室温条件下对实验小白鼠进行以下处理:切除甲鼠大脑皮层,破坏乙鼠下丘脑,其它结构保持完整。再把甲、乙组小鼠放到-5℃环境后,则              (    )

    A.甲不能维持体温相对恒定,乙能

   B.甲能维持体温相对恒定,乙不能 

    C.甲、乙都能维持体温相对恒定

    D.甲、乙都不能维持体温相对恒定

答案

B


解析:

小鼠为哺乳动物,体温调节中枢在下丘脑。

相关题目

BUKHANNON, West Virginia—Two rescue teams slowly moved along a two-mile path
BUKHANNON, West Virginia—Two rescue teams slowly moved along a two-mile path on Monday night to the site of a coal mine explosion that trapped 13 miners, who had not been heard from since the ear
Each of the following sentences has four underlined parts labeled A , B , C and
Each of the following sentences has four underlined parts labeled A , B , C and D . Identify the part that is incorrect . (5分)1. What wonderful the film is ! Shall we see it again ? A     
函数在区间[-3,a]上是增函数,则a的取值范围是(   ) A.  
函数在区间[-3,a]上是增函数,则a的取值范围是(   ) A.      B .     C.      D .
Though ________ money, his parents managed to send him to university. A. lacked
Though ________ money, his parents managed to send him to university. A. lacked B. lacking of C. lacking       D. lacked in
为了切实减轻小型微型企业负担,促进小型微型企业健康发
为了切实减轻小型微型企业负担,促进小型微型企业健康发展,财政部会同国家发展改革委印发通知,决定从2012年1月1日至2014年12月31日,对小型微型企
 观察下列各式:请你找出其中规律,并将第n(n≥1)个等式写
 观察下列各式:请你找出其中规律,并将第n(n≥1)个等式写出来                    .
     ▲        ,欲语泪先流。(李清照《武陵春》)
     ▲        ,欲语泪先流。(李清照《武陵春》)
唐朝一位余杭(今杭州)商人,要到洛阳去经商,如果走运河水
唐朝一位余杭(今杭州)商人,要到洛阳去经商,如果走运河水路,他不必经过 A.江南河            B.邗沟           C.通济渠          D.永

最新题目