The chambers of the heart are the main drivers within an intricate pathway, delivering blood to the lungs for gas exchange and enriching the body’s

Pertaining to the actions of the parasympathetic nervous system; chemical involved in producing cholinergic responses is acetylcholine. 1. Six Second ECG Guidebook (2012), T Barill,

Tendons that connect the cardiac valves to the papillary muscles to prevent valvular collapse. The valves are composed of similar components: leaflets; annulus – a

Refers to a physiological response that involves the heart rate: note that a positive chronotrope increases the heart rate. The autonomic nervous system has dramatic

Branches from the left main artery and wraps the left ventricle travelling between the left ventricle and the left atria along the epicardial surface of

Refers to the period between two sinus beats with a premature complex in between. If the period in between the QRS complexes is twice the

A cardiac rhythm that occurs when the junction (or possibly bilateral bundle branches) does not conduct the impulse from the atria to the ventricles; a

A collection of waveforms (i.e. QRS complex and the ECG complex). 1. Six Second ECG Guidebook (2012), T Barill, p. 194

The ability of a cell to receive and transmit an electrical impulse. 1. Six Second ECG Guidebook (2012), T Barill, p. 194

May occur from an overabundance of preload, high afterload and/or a damaged left ventricle; the overall effect is a backup of blood within the lung

Connective tissue in the heart provides structure, strength and protection to ensure efficient and effective electrical conduction and mechanical function. Connective tissue in the heart