Biochemistry Acetylcholine is released at all of the following junctions, EXCEPT: A Terminal sympathetic fibers to the hea B Terminal parasympathetic fibers C Somatic efferents to skeletal muscles D Parasympathetic ganglia. 💡 Explanation Acetylcholine is released at all of the following junctions, EXCEPT: ✓ Correct Answer: A. Terminal sympathetic fibers to the hea