CARDIOVASCULAR PHYSIOLOGY: Examining the effect of Vagus Nerve stimulation

If the human heart were experiencing hypothermia, what do you think would be the effect on heart rate?

A decrease in heart rate

The SA ( sinoatrial ) node in the human heart is located in the

Right atrium

The response that resumed the heartbeat after the Vagus nerve stimulation is called

Vagal escape

Parasympathetic stimulation reaches the heart through

Vagus nerves, which are cranial nerves

The effect of the parasympathetic nervous system on the heart is to

Decrease the heart rate

What effect do you think a fever of 104 would have on heart rate?

Increase in heart rate

The vagus nerve carries

Signals that decrease the heart rate

The usual pacemaker of the heart is the

Sinoatrial node

Without the Ringer's solution

Spontaneous cardiac action potentials would not occur

Extreme vagus nerve stimulation affects the heart by

Stopping the heart completely

The branch of the autonomic nervous system that dominates during exercise is the

Sympathetic branch

Vagal escape probably involves

Sympathetic reflexes

Research shows that, in the absence of neural and hormonal influences, the SA node generates action potentials at a frequency of approximately 100 times per minute. however , the resting heart rate is approximately 70 beats per minute, which suggests that

The parasympathetic nervous system has more control over heart rate.