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: About autonomic functions
a. The autonomic nerves don't initiate activity in smooth muscles but rather modify it .
b. The muscarinic action of acetylcholine is produced by parasymp. Pregang nerve fibres
c. Injection of atropine leads to slowing of the heart rate (bradycardia). a
d. Epinephrine & norepinephrine blood concentrations are equal
e. Sympathetic stimulation accelerates fatigue of skeletal muscles
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