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5 Written questions

5 Matching questions

  1. Incr preload causes ___ SV. It is manifest as incr EDV.
  2. ___ is the NT that acts on beta-1 receptors
  3. In nodal pacing myocytes, phase 2 of AP is ___.
  4. Norepi incr inward Ca2+ during plateau via beta-1 receptors. It also incr SR Ca2+ pump activity by ___, which incr Ca2+ in SR.
  5. Parasympathetic ___ innervation is found in the SA, artia, and AV.
  1. a phosphorylation of phospholamban
  2. b incr
  3. c vagal
  4. d absent
  5. e Norepi

5 Multiple choice questions

  1. decr
  2. absent
  3. incr dev't tension
  4. • incr K+ conductance- outward
  5. incr

5 True/False questions

  1. Alpha-1 receptor activation causes ___ In the CV system.• positive chronotropy
    • pos dromotropy
    • pos inotropy


  2. In working myoctes, phase 2 of AP is plateau caused by ___.• 1º incr K+ out
    • decr Ca2+ in


  3. In working myoctes, phase 0 of AP is rapid depol caused by ___• 1º incr K+ out
    • decr Ca2+ in


  4. Neg chronotropy reduces HR by ___.decr rt of phase 4 depol in pacemaker cells


  5. In other words, Frank-Starling describes a proportional relationship between ___• decr inward Ca2+ current
    • incr outward K+ current


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