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5 Written questions

5 Matching questions

  1. papillary muscles
  2. crescent shape
  3. the pulmonic valve closes when the blood pressure within the pulmonary trunk exceeds blood pressure within the right ventricle. the aortic valve closes when the bp within the aorta exceeds the bp within the left ventricle
  4. limits movement of the heart within the mediastinum
  5. valve cusps/leaflets coapt normally because the papillary muscles are "pulling" on the chordae tendonae attached to the free border of the valve cusps/leaflets
  1. a cone shaped projections of myocardium (trabeculae carnae) located in both ventricles
  2. b what happens to the valves when the papillary muscles contract
  3. c what is the function of the pericardial sac
  4. d briefly describe the mechanism of semilunar valve closure
  5. e what is the shape of the right ventricle

5 Multiple choice questions

  1. a pericardial layer is synonymous with the outer layer of the heart wall
  2. raided muscle bundles in the anterior wall of the right atrium and the left and right auricles
  3. th coronary arteries are perfused during which phase of the cardiac cycle
  4. this is an electrical short cut that conducts myocardial action potentials rapidly fron the inter ventricular septum to the papilllary muscles on the lateral side of the right ventricle
  5. what is the name of the tissue that fuses the heart valves together

5 True/False questions

  1. tricuspid and mitralwhen the ventricles contract which valves are closed


  2. coronary artery disease that caused mipapillary muscle function is adversely affected by what heart disorder


  3. electrical insulator, prevent overstretching of hear valves, foundation for heart valve structure, insertion point for atrial and ventricular myocardiumlist the 4 functions of fibrous skeleton


  4. cone shapedwhat is the shape of the left ventricle


  5. causes an increased risk of blood clot formation which can pass into the lungs or into the brainbriefly explain the clinical significance of stagnant blood flow in the auricles


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