EKG Exam – Questions & Complete Answers

EKG Exam – Questions & Complete Answers

What is the heart? ✔️Ans - The muscle responsible for the process by
which blood is pumped throughout the body.

Pericardium ✔️Ans - The layer or sac that surrounds the heart.




Myocardium ✔️Ans - The middle layer of heart muscle.

, Endocardium ✔️Ans - The innermost layer of heart muscle.

Epicardium ✔️Ans - The top layer of heart muscle.

Conduction System of the Heart ✔️Ans - The system responsible for the
regulation of the pumping action of the heart, as well as the conduction of
the electrical impulses that causes the myocardium to contract.

Conduction system pathway ✔️Ans - Sinoatrial (SA) node,
atrioventricular (AV) node, Bundle of His, right and left bundle branches,
purkinje fibers

Myocardial infarction ✔️Ans - Commonly known as a heart attack, is a
term that refers to an obstruction to the myocardial tissue. This
obstruction causes an interruption of the blood supply to part of the heart
which causes the heart cells to die.

Myocardial ischemia ✔️Ans - Also known as angina, is a condition
caused by a lack of oxygen-rich blood in the heart.

Arrhythmia ✔️Ans - A term used to refer to any disorder of your heart
rate or rhythm.

Limb Leads ✔️Ans - 1. Lead I: Records electrical activity from right arm
to left arm
2. Lead II: Records electrical activity from right arm to left leg
3. Lead III: Records electrical activity from left arm to left leg