Heart Physiology

Front

What part of the medulla oblongata controls heart rate?

Back

Cardiac center.

Front

What does the T wave represent in an electrocardiogram?

Back

Ventricular repolarization.

Front

What does an electrocardiogram measure?

Back

The electrical activity of the heart.

Front

What part of the electrical conduction system is responsible for transmitting impulses to the ventricles?

Back

Bundle Branches.

Front

What is the volume of blood pumped out of a ventricle with each heartbeat called?

Back

Stroke Volume.

Front

What is the primary function of the SA node?

Back

To initiate the heartbeat and set the pace for the heart rate.

Front

What is cardiac output?

Back

The total volume of blood pumped by the heart per minute.

Front

What is the role of the AV node in the heart's electrical conduction system?

Back

To delay the electrical impulse before it passes to the ventricles.

Front

What does the P wave represent in an electrocardiogram?

Back

Atrial depolarization.

Front

What is the significance of the QRS complex in an electrocardiogram?

Back

It represents ventricular depolarization.