PBS - 2.1 EKG review Flashcard

Front

What does the P-wave on an EKG represent?

Back

The P-wave correlates with atrium contraction and signals moving from the SA node to the AV node.

Front

Where are the Purkinje fibers located in the heart?

Back

The Purkinje fibers are located at point I.

Front

What marks the end of the cardiac cycle in the electrical pathway of the heart?

Back

The end of the cardiac cycle is marked by the Purkinje Fibers.

Front

What does the T-wave on an EKG indicate?

Back

The T-wave correlates with ventricle repolarization.

Front

What is the sequence of the cardiac cycle in terms of electricity?

Back

The sequence is polarization → depolarization → repolarization.

Front

What is the function of the SA node in the heart?

Back

The SA node acts as the natural pacemaker, initiating the electrical impulse that triggers heartbeats.

Front

What role does the AV node play in the heart's electrical conduction system?

Back

The AV node receives impulses from the SA node and delays them before passing them to the ventricles.

Front

What are the Bundle of His and its function?

Back

The Bundle of His conducts impulses from the AV node to the ventricles.

Front

What is depolarization in the context of the cardiac cycle?

Back

Depolarization refers to the process where cardiac muscle cells become less negative, leading to contraction.

Front

What is repolarization in the context of the cardiac cycle?

Back

Repolarization is the process where cardiac muscle cells return to their resting negative state after contraction.