Heart beats are accelerated by
Options
(a) cranial nerves and acetylcholine
(b) cranial nerves and adrenaline
(c) sympathetic nerves and acetylcholine
(d) sympathetic nerves and ephinephrine
Correct Answer:
sympathetic nerves and ephinephrine
Explanation:
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Accelerator nerve ..(sympathetic nervous system) whenua stimulated, release neurotransmitter at SA node to increase heart rate.