下图为人体内肾上腺素合成的过程示意图,下列有关叙述中,正确的

下图为人体内肾上腺素合成的过程示意图,下列有关叙述中,正确的是

A.肾上腺素由肾上腺分泌,在人体内含量较高,作用高效

B.寒冷及低血糖的刺激都可以促进肾上腺素的合成和分泌

C.与肾上腺素的合成和分泌有关的细胞器有核糖体、内质网、高尔基体和线粒体

D.肾上腺素与靶细胞膜上的载体结合后进入细胞,直接参与细胞的物质和能量代谢

答案

B

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