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Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { cardiocytes } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { bradycardia } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { diastole } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { visceral pericardium } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { systole } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { myocardium } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { right pulmonary vein } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { superior vena cava } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided. $$ \text { parietal pericardium } $$ a. vein to the left atrium b. covers outer surface of the heart c. supplies blood to heart muscle d. lines inner surface of pericardial sac e. slow heart rate f. cardiac muscle cells g. muscular wall of the heart h. relaxation phase of the cardiac cycle i. vein to the right atrium j. contraction phase of the cardiac cycle

The heart lies in the (a) pleural cavity (b) peritoneal cavity (c) abdominopelvic cavity (d) pericardial cavity