1	Mediastinum		_____	between the right ventricle and the pulmonary artery
2	Apex		_____	a series of radiographs taken after a contrast medium (dye) is injected into an artery or vein
3	Pericardium		_____	receives oxygenated blood from the lungs via the pulmonary veins
4	Myocardium		_____	returns blood from parts of the body below the diaphragm back to the heart
5	Endocardium		_____	abnormal accumulation of fluid in the thoracic cavity between the visceral & parietal pleurae
6	Right atrium		_____	swishing sound in the heart
7	Right ventricle		_____	between the left ventricle and the aorta
8	Left atrium		_____	the thickest and strongest layer of the heart
9	Left ventricle		_____	receives deoxygenated blood from the entire body
10	Tricuspid valve		_____	heard when the AV valves close
11	Mitral valve		_____	the phase of relaxation
12	Pulmonary (semilunar) valve		_____	the chest cavity between the lungs
13	Aortic (semilunar) valve		_____	the phase of contraction
14	Sinoatrial (SA) node		_____	inner most layer of the heart (connective tissue)
15	Systole		_____	pacemaker of the heart
16	Diastole		_____	returns deoxygenated blood from the head, neck, chest & upper extremities back to the heart
17	Lubb		_____	pumps blood to the lungs via the pulmonary artery
18	Dubb		_____	between the left atrium and left ventricle
19	Murmur		_____	the narrow part of the heart
20	Arteries		_____	thickest most muscular section of the heart, pumps oxygenated blood via the aorta to the entire body
21	Veins		_____	heard when the semilunar valves close
22	Superior vena cava		_____	invasive procedure used to visualize the heart's chambers, valves, great vessels & coronary arteries
23	Inferior vena cava		_____	carries blood back to the heart (except pulmonary)
24	Pleural effusion		_____	carries blood away from the heart (except pulmonary)
25	Angiogram		_____	between the right atrium and right ventricle
26	Aortogram		_____	serous membrane that covers the entire heart
27	Aneurysm		_____	an xray visualization after a contrast medium (dye) is injected via a catheter passed through the femoral artery and into the aorta
28	Cardiac cath		_____	abnormal bulge in the wall of a blood vessel