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12 Cards in this Set
- Front
- Back
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Divisions of the mediastinum |
Superior and Inferior mediastinum Inferior divided into- Anterior (to the heart); posterior (to the heart); Middle (the heart) |
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Describe the heart and its blood flow overview |
2 sides; 4 chambers; self-initializing; self-adjusting pump; R side- oxygen-poor blood from superior/inferior Vena Cava to the lungs; L side- oxygen rich blood from lungs to entire body |
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Systemic circulation |
Left atrium- bicuspid valve- left ventricle- out of heart- aortic valve- aorta- arterial system- capillaries- veins- hear through superior/inferior vena cava |
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Pulmonary circulation |
Superior/inferior vena cava- right atrium- tricuspid valve- right ventricle- out of heart- pulmonary valve- pulmonary trunk- R/L lungs- back to heart through pulmonary veins |
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Myocardial infarction |
lack of blood to specific myocardium (usually blockage in Coronary A. by buildup of lipids on internal walls) |
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Angina Pectoris |
pain in heart and produces pain of chest; normally narrow or obstructed coronary A. |
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Layers of Heart |
outermost to innermost- Fibrous pericardium; Parietal serous pericardium; Pericardial cavity; Epicardium (visceral serous pericardium); Myocardium (cardiac muscle); Endocardium (lines heart so blood isn't on muscle |
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Purpose of fibrous skeleton of heart |
attachment points for myocardium and cuspid valves; supports/strengthens orifices; provides electrically insulated barrier btw atria and ventricles |
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Ligamentum arteriosum |
sup pulmonary trunk to inf aortic arch; adult remnant of embryological ductus arteriosus |
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Left recurrent laryngeal N. |
because it is on a weak spot of the aorta the can be a bulge which impinges the N. and causes hoarseness |
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Atrial septal defects |
incomplete closure of foramen ovale (can be clinically insignificant); large opening in inreratrial septum allows mixture of oxygen rich and oxygen depleted blood |
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Ventral septal defects |
all defects of interventricular septum are clinically relevant and allow mixture of O2 rich and O2 deleted blood |
