| Cardiovascular | The heart is an organ of this body system |
| Myocardium | The muscular layer of the heart |
| Pericardium | The sac surrounding the heart |
| Cardiac Muscle | The type of tissue that compromises the bulk of the myocardium |
| To pump blood to the organs and the body | The function of the heart |
| Carry blood away from the heart | The function of an artery |
| Tunica Externa, Tunica Media, and Tunica Interna | The three layers of an atery from outermost to innermost |
| To carry blood to the heart | The function of a vein |
| Lumen | The name of the space in a blood vessel wherein blood flows |
| Endocardium | The lining of the heart |
| Medulla Oblongata | The primary brain stem structure that controls heart rate |
| Mediastinum | The specific space in the thoracic cavity where the heart is located |
| Sternum | The bone that protects the heart anteriorly |
| Left | The bulk of the heart rests on this side of the body |
| Cervical Fascia | The pericardium attaches to this structure inferiorly |
| Left | The side of the heart that has a thicker ventricular wall |
| Tunica Media | The layer of the artery that consists mostly of smooth muscle |
| Atria | The chambers of the heart whose function is to receive blood from the veins |
| Endocardium | The tunica interna is continuous with this layer of the heart |
| Base | The part of the heart that rests just below the right second rib |
| Ventricles | The bottom 2 chambers of the heart |
| AV (Atrioventricular) | The valves that are located between the atria and the ventricles |
| Left | The apex of the heart points to this side of the body |
| Brachiocephalic | The branch of the aorta that divides into the right subclavian and right common carotid arteries |
| Cordae Tendinea | The scientific term for the "heart strings" that extend from the AV cusps to the papillary muscles |
| (Interventricular)Septum | The structure that divides the 2 ventricles of the heart |
| Right Atrium | The superior vena cava attaches to this heart chamber |
| Aorta | the largest artery of the human body |
| Auricles | The "ear-like" structures that extend from the atria |
| 5th and 6th | The apex of the heart usually sits at the same approximate level as the space between these 2 ribs |