Cardiac Crossword Puzzle

The heart is enclosed in a(n) ________ sac.
Middle layer of the heart muscle.
The bundle of ___ transmits the electrical impulse from the atria to the bundle branches.
The blue-gray discoloration of skin, nail beds, and lips due to hypoxia.
Ability of cardia cells to respond to an electrical impulse.
Main organ of the pulmonary system.
The _______ valve is located between the left atrium and the left ventricle.
The __________ ______ serves as an impulse delay mechanism, allowing the atria to completely contract and fully fill the ventricles.
Largest artery in the body.
Medical term for heart attack.
Represents depolarization of the atrium on an ECG.
ST-Elevation Myocardial Infarction.
Tiny sacs of lung tissue where exchange of carbon dioxide and oxygen takes place.
Represents depolarization of the ventricles.
Cardiac enzyme that the heart releases when damage has occurred.
One of the lower chambers of the heart.
Decreased supply of oxygen to tissue.
Ability of cardiac cells to initiate an electrical impulse.
The inferior ____ ____ returns deoxygenated blood from the lower body to the heart.
Upper chambers of the heart.
Divides the right and left sides of the heart.
Ability of cardiac cells to shorten, causing the myocardium to contract.
Reduced oxygen in any of the body's cells.
Stroke Volume x Heart Rate =______ ______.
Shortness of breath or uncomfortable breathing.
Part of the nervous system that raises heart rate and blood pressure.
Heart sounds are the noises caused by the normal closing of heart ______.
Pertaining to the heart.
The _____ node is the primary pacemaker of the heart.
Abnormal heart sound.