EKG Basics and Heart Conduction System

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Questions and Answers

Which structure carries oxygenated blood to the heart?

Pulmonary arteries

Right atrium

Pulmonary veins (correct)

Veiny Vampires

What is the primary function of the bundle of His?

To carry deoxygenated blood

To distribute electrical impulses (correct)

To pump blood to the body

To regulate heart rate

Which part of the heart receives deoxygenated blood from the body?

Left ventricle

Right ventricle

Left atrium

Right atrium (correct)

What is the normal heart rate range for Purkinje fibers?

20-40 BPM Signup and view all the answers

What is described as carrying dead (deoxygenated) blood to the heart?

Veiny Vampires Signup and view all the answers

Which structure conducts electrical impulses after the bundle of His?

Purkinje fibers Signup and view all the answers

Which chamber of the heart pumps oxygenated blood to the body?

Left ventricle Signup and view all the answers

Where does the right bundle branch direct impulses?

To the right ventricle Signup and view all the answers

What is the heart rate range for the AV Node?

40-60 BPM Signup and view all the answers

Which is NOT a function of arteries?

Carrying deoxygenated blood Signup and view all the answers

What is the primary purpose of an electrocardiogram (EKG)?

To record the electrical signals of the heart Signup and view all the answers

Which of the following is NOT an indication for performing an EKG?

Evaluating kidney function Signup and view all the answers

What does a HOLTER Monitor do?

Records a continuous EKG for 24-48 hours Signup and view all the answers

Which component of the EKG represents atrial activity?

P Wave Signup and view all the answers

What is the typical heart rate range indicated by the SA Node?

60 - 100 BPM Signup and view all the answers

Which term describes the irregular heart rhythms detectable by EKG?

Arrhythmias Signup and view all the answers

Which of the following is an inappropriate action regarding copyright material?

Reproducing material without permission Signup and view all the answers

Which element of the EKG reflects ventricular depolarization?

QRS Complex Signup and view all the answers

Study Notes

EKG basics

EKG stands for electrocardiogram, it is also known as ECG
EKG records the electrical signals of the heart
This test helps identify arrhythmias, blocked arteries (CAD, MI), and assess how well pacemakers or cardiac medications function
A Holter monitor records a continuous EKG for 24-48 hours when a standard EKG is inconclusive

Electrical Conduction System

P Wave: Represents atrial depolarization
QRS Complex: Represents ventricular depolarization
SA Node: - sets the heart rate: 60 to 100 beats per minute (bpm)
AV Node: - if SA node fails, the AV steps in: 40 to 60 bpm
Bundle of His: - transmits the signal to the ventricles: 40 to 60 bpm
Left Bundle Branch: - carries the signal to the left ventricle
Right Bundle Branch: - carries the signal to the right ventricle
Purkinje Fibers: - conduct the signal throughout the ventricles: 20 to 40 bpm

The Heart

Right Atrium receives deoxygenated blood from body tissues via veins
Left Atrium receives oxygenated blood from lungs via veins
Right Ventricle pumps deoxygenated blood to the lungs via the pulmonary artery
Left Ventricle pumps oxygenated blood to the body via the aorta

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Description

Explore the fundamentals of EKG (Electrocardiogram) and the electrical conduction system of the heart. This quiz covers essential concepts such as the P wave, QRS complex, and key components like the SA node and AV node. Test your knowledge on how EKGs help diagnose heart conditions and monitor heart activity.