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What does depolarization of the heart mean?
It is a positive wave in the hearts muscle cells, the process of electrical discharge and the flow of electrical activity.
Does the electrical activity of the heart precede mechanical activity?
Yes. It is the electrical activity that stimulates the mechanical activity.
What does an electrocardiogram show?
an electrocardiogram records the electrical activity of the heart, with this you can see the rhythm of the heart and the way it is contracting. This is a great diagnostic tool for health care professionals.
Is electrical activity of the heart distal to proximal?
No, electrical activity in the heart moves from proximal to distal.
What does the ECG and EKG record?
ECG and EKG mean the same thing, and it records the hearts electrical activity on a 6 second strip. The physician can make a diagnosis by looking at the EKG print out. If a 12-Lead EKG is used, then all walls and function of the heart will be recorded.
Is alternating current artifacts part of the hearts electrical circuitry?
No, alternating current artifacts are not part of the heart's natural electrical circuitry. The heart's electrical system is driven by specialized cells that generate and propagate electrical signals to coordinate the heartbeats. External sources of alternating current can interfere with the heart's electrical activity and cause disruptions or abnormalities in the heart rhythm.
What is the difference between an MRI and a EEG?
Both measure electrical activity -- the ECG in the heart and the EEG in the brain.An EEG is an electroencephalogram and an ECG also known as an EKG is an electrocardiogram. An EEG records brainwave/electrical activity. An ECG records the electrical activity that the heart produces.
What does an electrocardiogram record about the heart's electrical activity?
An electrocardiogram (ECG) records the heart's electrical activity, showing the heart's rhythm and any abnormalities in the heart's electrical system.
What does ECG measure?
The electrical activity of the heart.
Action potential is an?
Explosion of electrical activity
The heart does not need to have electrical activity for defibrillation to work?
No, what defibrillation does is 'reorganize' chaotic electrical activity known as ventricular fibrillation or pulseless V-Tach.
What are the stages of the hearts beats?
The heart beats in two (2) stages. The Diastolic and Systolic. The Diastolic is the blood filling stage and the Systolic is the blood contracting stage. The heartbeat is initiated in the SA Node (SinoAtrial). It sends out regular waves of electrical activity to the atrial walls. This causes the right and left atria to contract at the same time. The electrical activity cannot pass to the ventricles because there is a layer of collagen tissue. Instead the electrical activity gets passed to the AV Node (AtrioVentricular) The AV Node is responsible for passing the waves of electrical activity on to the Bundle Of His. Although there is a slight delay to make sure the ventricle's contraction occurs after the Atria has emptied. (The bundle of His is a group of muscle fibres which conduct the electrical activity to muscle fibres in the right and left ventricle walls Purkyne Fibres.) The Purkyne fibres carry the waves of electrical activity to the walls of the right and left ventricles , causing them to contract at the same time from the bottom of the muscle up.
