A) SA node
B) \[\beta -\]cells of Langerhans
C) Dorsal root of spinal cord
D) Epithelial cells of stomach
Correct Answer: A
Solution :
Adrenaline is a neurotransmitter that directly acts on the SA node. The hormone adrenaline (epinephrine) is secreted by adrenal medulla.You need to login to perform this action.
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