Heart beat is accelerated by

  • A
    Sympathetic nerves and acetylcholine
  • B
    Parasympathetic nerves and adrenaline
  • C
    Cranial nerves and acetylcholine
  • D
    Sympathetic nerves and nor epinephrine

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Similar Questions

Read the following statements:
$I$ - Increased heart rate.
$II$ - Increased ventricular contraction force.
$III$ - Decreased cardiac efficiency.
$IV$ - Increased cardiac efficiency.
$V$ - Decreased heart rate.
$VI$ - Decreased conduction speed of action potential.
Categorize the given statements into Sympathetic and Parasympathetic nervous systems.
Sympathetic Nervous System $\quad$ Parasympathetic Nervous System

How do parasympathetic neural signals affect the working of the heart?

The pacemaker stimulates:

What is the effect of the parasympathetic nervous system on the heart rate?

The heart's normal activities are regulated:

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