Characteristics of epinephrine include all of the following EXCEPT:
a) It is synthesized into the adrenal medulla
b) It is synthesized into the nerve ending
c) It is transported in the blood to target tissues
d) It directly interacts with and activates adrenoreceptors
The adrenal medulla releases a mixture of epinephrine and norepinephrine at an 80:20 ratio, whereas sympathetic nerve terminals synthesize and release a mixture of norepinephrine and epinephrine at an 80:20 ratio. Thus, while B is the most correct answer, none of the answers is fully correct.
B
B
C
C
B
A
C