| A | B |
|---|
| a closed system composed of | heart and blood vessels |
| the heart pumps | blood |
| blood vessels | circulate to all parts of the body |
| cardiovascular function | delivery of oxygen and nutrients |
| function of cardiovascular removal | carbon dioxide and other waste products |
| where the heart is located | thorax between the lungs |
| mediastium | contains the heart |
| heart orientation | pointed apex towards left hip |
| size of the heart | your fist |
| base of heart points toward | right shoulder |
| fiborous pericardium | single superficial covering |
| serous pericardium | double covering |
| parietal layer | lines the inner surface of the pericardium |
| viseral layer | epicardium- next to heart |
| serous fluid | fills pericardial cavity |
| arteries | take blood away from the heart |
| aorta | leaves left ventricle |
| pulmonary trunk | artery that branches |
| pulmonary trunk leaves.. | right ventricle |
| veins | brings blood back to heart |
| superior vena cava enters | right atrium |
| how many pulmonary arteries there are | four |
| pulmonary veins enter | left atrium |
| receiving chambers of the heart | right & left atrium |
| discharging pumps of the heart | right & left ventricle |
| intraventricular septum | separates the 2 ventricles |
| interatrial septum | separates the 2 atria |
| semilunar valves are located | between ventricle & artery |
| semilunar valve | closed during relaxation |
| semilunar valve is open | during ventricular contraction |
| pulmonary circulation | R. side of heart to L. side thru body tissues & back to R. side of heart |
| systemic circulation | L. side of heart thru body tissues & back to R. side of heart |
| diastole | blood is dumping- relaxing |
| systole | squeezing or contracting |
| heart's own blood supply system | coronary arteries, & cardiac veins |
| SA node | heart's natural pacemaker |
| control over the SA node | sympathetic & parasympathetic NS |
| SA node initiates | action potentials |
| AV node receives | impulses at the junction of the atria & ventricles |
| Bundle of His | transports impulses down interventricular septum |
| perkinje fibers make | ventricles contract |
| heartbeat | 60-100 beats per minute |
| lumen | inside of vein |
