下图为甲状腺激素分泌调控模式图,主要包括①②③④⑤过程,以下

下图为甲状腺激素分泌调控模式图,主要包括①②③④⑤过程,以下判断正确的是

A.寒冷刺激引起①过程加强,进而引起血液中甲状腺激素升高,提高细胞的代谢速率

B.X和Y具有能与甲状腺激素特异性结合的受体,Z具有TRH和TSH特异性受体

C.缺碘造成③降低,通过②③促进④⑤加强,引起甲状腺增生,此过程包含分级调节

D.Z具有的TSH特异性受体损坏,将造成TRH分泌量增加,引起甲状腺激素分泌增加

 

答案

A

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