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45 Cards in this Set
- Front
- Back
Three interrelated components of Cardiovascular System |
- blood - heart - blood vessels |
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a liquid connective tissue |
Blood |
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water liquid extracellular matrix |
Blood Plasma |
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Formed Elements of Blood Plasma |
- Red Blood Cells - White Blood Cells - Platelets |
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- aka Erythrocytes - contain oxygen-carrying protein hemoglobin - lacks nucleus and other organelles - live only about 120 days |
Red Blood Cells |
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- aka Leukocytes - have nuclei - do not contain hemoglobin - general function to combat invaders by phagocytosis or immune responses |
White Blood Cells |
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Types of white Blood Cells |
Basophils and Eosinophils |
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intensify inflammatory reaction |
Basophils |
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release histaminase |
Eosinophils |
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major soldiers of the immune system |
Lymphocytes |
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bacteria and toxins |
B cells |
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viruses, fungi, transplanted and cancer cells |
T Cells |
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infectious microbes and certain tumor cells |
Natural Killer (NK) Cells |
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- aka Thrombocytes - splinters into 2000-3000 - disc-shaped w/ many vesicles but no nucleus - help stop blood loss by forming platelet plug - 5-9 days life span |
Platelets |
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blood has only Antigen A |
Type A |
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blood has only Antigen B |
Type B |
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- blood has antigens A and B - universal recipients |
Type AB |
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- blood has neither antigen - universal donor |
Type O |
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- located at the mediastinum - apex at tip of the left ventricle - base is posterior surface |
Heart |
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Membrane surrounding and protecting the heart |
Pericardium |
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2 main parts of Pericardium |
- Fibrous - Serous |
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reduces friction; secreted into pericardial cavity |
Pericardial Fluid |
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Layers of the Heart wall |
- Epicardium - Myocardium - Endocardium |
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Smooth, slippery texture to outermost surface |
Epicardium |
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95% of heart is cardiac muscle |
Myocardium |
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Smooth lining for chambers of heart |
Endocardium |
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Chambers of the Heart |
2 atria and 2 ventricles |
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Heart Valve |
- Atrioventricular Valves - Semilunar Valves |
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Atrioventricular Valves |
- Tricuspid Valve - Bicuspid Valve |
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Semilunar Valves |
- Aortic Valve - Pulmonary Valve |
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Bicuspid Valve Strings |
Chordae Tendinae |
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Specialized Cardiac Muscle Fibers |
Autorhythmic Fibers |
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acts as pacemaker of the heart |
Sinoatrial Node |
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5 main types of Blood Vessels |
- Arteries - Arterioles - Capillaries - Venules - Veins |
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carry blood away from the heart |
Arteries |
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carry blood to the heart |
Veins |
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Basic Structure of Blood Vessel |
- Tunica Interna - Tunica Media - Tunica Externa |
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decrease in lumen diameter |
Vasoconstriction |
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increase in lumen diameter |
Vasodilation |
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Conduction System |
- Sinoatrial Node - Atrioventricular Node - Purkinje Fibers |
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Two kinds of Circulation |
- Systemic - Pulmonary |
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Two Types of Blood Vessel (flow) |
- Vasoconstriction - Vasodilation |
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Largest Artery |
Aorta |
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Largest Vein |
Vena Cava (Superior & Inferior) |
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Blood Circulation in the Heart |
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