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.