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When the cardiac cells are in resting and negatively charged state this is known as?
Depolarization
In cardiac muscle the fast depolarization phase of action potential is the result of?
increased membrane permeability to sodium ions
What part of the cardiac cycle is associated with the QRS complex?
The cardiac cycle refers to a complete heartbeat, including the systole and diastole. The QRS complex occurs during the depolarization of the right and left ventricles of the human heart.
What is electrocardiogram?
An electrocardiogram (ECG or EKG) is the display or record of the electrical activity of the heart. It picks up electrical impulses generated by the polarization and depolarization of cardiac tissue and translates into a waveform.
What happens immediately after the QRS wave of the cardiac cycle?
There are a number of things that may happen during the QRS wave. There will be ventricular depolarization and right after absolute refractory period for ventricles will occur.
The greater influx of sodium ions results in what of the membrane?
depolarization
What phase of cardiac muscle action potential caused by sodium ions entering cell?
The first phase of a cardiac action potential (or any action potential) involves influx of sodium ions. This phase may be called:The rising phaseThe depolarization phasePhase 0
What is depolarization of a neurotransmitter?
Depolarization stimulates the release of the neuro-transmitter from the terminal end of the neuron.
Why do you keep the heart from entering tetanus?
The action potential of cardiac muscle is prolonged consisting of the depolarization spike and plateau and a repolarization period. The action potential causes a long refractory period of about 250-400 milliseconds in the heart.
What molecules cause polarization and depolarization?
Sodium ions cause depolarization and potassium ions cause repolarization.
What is an antonym for polarization?
Depolarization
Immediately before the P wave?
The electrical milestone event that occurs at the P wave of the cardiac cycle of the EKG is atrial depolarization. The upward stroke is right atrial depolarization, and the downward stroke is left atrial depolarization. Normally, this lasts for no more than 0.11 sec.
