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Circulatory System Key Terms & Abbreviations

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Question
Answer
Aortic Valve   flap or cusp located between the left ventricle of the heart and the aorta.  
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Arteries   blood vessels that carry blood away from the heart.  
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Blood   fluid that circulates through the vessels in the body to carry substances to all body parts.  
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Capillaries   tiny blood vessels that connect arterioles and venules and allows for exchange of nutrients and gases between the blood and the body cells.  
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Circulatory System   also known as the cardiovascular system ; is often referred to as the "transportation" system of the body. It consists of the heart, blood, vessels, and blood. It transports oxygen and nutrients to the body cells.  
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Diastole   period of relaxation of the heart.  
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Endocardium   serous membrane lining of the heart.  
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Erythrocyte   red blood cell (RBC).  
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Hemoglobin   the iron-containing protein of the red blood cells; serves to carry oxygen from the lungs to the tissues.  
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Left Atrium   receives oxygenated blood from the body cells.  
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Left Ventricle   receives blood from the left atrium and pumps the blood into the aorta for transport to the body cells.  
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Leukocytes   white blood cells (WBC).  
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Mitral Value   flap or cusp between the left atrium and left ventricle in the heart.  
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Myocardium   muscle layer of the heart.  
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Pericardium   membrane sac that covers the outside of the heart.  
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Plasma   liquid portion of the heart.  
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Pulmonary Valve   flap or cusp between the right ventricle of the heart and the pulmonary artery.  
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Right Ventricle   receives blood from the right atrium and pumps the blood to the lungs for oxygen.  
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Right Atrium   receives blood as it returns from the body cells.  
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Septum   membraneous wall that divides two cavities.  
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Systole   period of work, or contraction, of the heart.  
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Thrombocytes   also called platelets; blood cells required for clotting of the blood.  
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Tricuspid Valve   flap or cusp between the right atrium and right ventricle in the heart.  
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Veins   blood vessels that carry blood back to the heart.  
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ACLS   advanced cardiac life support  
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AED   automated external defibrillator  
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AF, Afib, at fib   atrial fibrillation  
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AMI   acute myocardial infarction  
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AS   aortic stenosis, arteriosclerosis  
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ASCVD   arteriosclerotic cardiovascular disease  
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AV, A-V   atrioventricular, arteriovenous  
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AVB   atrioventricular block  
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AVD   aortic valve disease  
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AVR   aortic valve replacement  
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AVS   arteriovenous shunt  
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BBB   bundle branch block  
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BCLS   basic cardiac life support  
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BP   blood pressure  
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CABG   coronary artery bypass graft  
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CAD   coronary artery disease  
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CEA   carotid endarterectomy  
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CHB   complete heart block  
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CHD   congenital heart disease, coronary heart disease  
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CHF   congestive heart failure  
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CO   cardiac output  
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CPR   cardiopulmonary resuscitation  
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CV   cardiovascular  
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CVP   central venous pressure  
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DNR   do not resuscitate  
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DVT   deep vein thrombosis  
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ECC   emergency cardiac care, extracorporal circulation  
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ECG, EKG   electrocardiogram  
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ECHO   echocardiography  
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EF   ejection fraction  
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EPS   electrophysiologic study  
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HBP   high blood pressure  
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HR   heart rate  
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HTN   hypertension  
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IABP   intra-aortic balloon pump  
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ICD   implantible cardiac defibrillator  
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IV   intravenous, intraventricular  
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IVF   intravenous fluid, intravascular fluid  
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LBBB   left bundle branch block  
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LBP   low blood pressure  
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MI   myocardial infarction  
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MR   mitral regurgitation  
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MS   mitral stenosis  
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NSR   normal sinus rhythm  
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P   pulse  
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PAC   premature atrial contraction  
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PAD   peripheral arterial disease  
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PALS   pediatric advanced life support  
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PDA   paten ductus arteriosus  
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PPM   permanent pacemaker  
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PTCA   percutaneous transluminal coronary angioplasty  
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PVC   premature ventricular contraction  
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RBBB   right bundle branch block  
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S1, S2   heart sound (first, second)  
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SBE   subacute bacterial endocarditis  
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SSS   sick sinus syndrome  
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SVT   supraventricular tachycardia.  
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VF, Vfib, vent fib   ventricular fibrillation  
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VT, vtach   ventricular tachycardia  
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