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Ch. 20 - Cardiovascular System: The Heart Test

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5 Written Questions

5 Matching Questions

  1. Pulmonary Circulation
  2. Gap junctions
  3. Right ventricle
  4. Atrioventricular (AV) node
  5. Calcium-induced calcium release (CICR)
  1. a is medial to the right atrioventricular valve. Small node of specialized cardiac muscle fibers that gives rise to the atrioventricular bundle of the conduction system of the heart.
  2. b opens into the pulmonary trunk.
  3. c Allow cytoplasm to flow freely between cells, resulting in areas of low electrical resistance between the cells.
  4. d carries blood to the lungs and returns it to the left side of the heart.
  5. e The movement of Ca2+ through the plasma membrane, including the membranes of the T tubules, into cardiac muscle cells stimulates the release of Ca2+ from the sarcoplasmic reticulum.

5 Multiple Choice Questions

  1. membrane channels open, bringing about the depolarization phase of the action potential.
  2. is an artery that exits the heart, carries blood from the left ventricle to the body
  3. represents repolarization of the ventricles and precedes ventricular relaxation.
  4. reduce the rate and strength of cardiac muscle contractions, reducing the heart's demand for oxygen.
  5. The AV valve between the left atrium and left ventricle has 2 cusps.

5 True/False Questions

  1. Pulmonary Semilunar Valveis located in the Pulmonary Trunk.

          

  2. Starling law of the heartis the relationship between preload and stroke volume.

          

  3. Pericardium/ Pericardial sacthe major vein draining the tissue on the left side of the heart.

          

  4. Afterloadthin- walled, form the superior and posterior parts of the heart.

          

  5. Cardiopulmonary resuscitation (CPR)depends on a reasonable knowledge of the position and shape of the heart. (compressions and helping the patient breathe.)

          

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