NAME: ________________________

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5 Written Questions

5 Matching Questions

  1. Incr contractility cause ___ SV.
  2. In other words, Frank-Starling describes a proportional relationship between ___
  3. Neg chronotropy reduces HR by ___.
  4. In nodal pacing myocytes, phase 3 of AP is repolarization caused by ___.
  5. In nodal pacing myocytes, phase 2 of AP is ___.
  1. a absent
  2. b incr
  3. c EDV/RAP and CO/SV
  4. d decr rt of phase 4 depol in pacemaker cells
  5. e • incr K+ conductance- outward

5 Multiple Choice Questions

  1. • I(f)- inward Na+
  2. diminishing Na+ gradient, which diminishes Na+-Ca2+ exchange
  3. Norepi
  4. • decr inward Ca2+ current
    • incr outward K+ current
  5. incr

5 True/False Questions

  1. Norepi incr inward Ca2+ during plateau via beta-1 receptors. It also incr SR Ca2+ pump activity by ___, which incr Ca2+ in SR.phosphorylation of phospholamban

          

  2. PS vagal innervation uses the NT ___ on ___ receptors.ACh, muscarinic

          

  3. Beta-1 receptor activation causes ___ in the CV system.• positive chronotropy
    • pos dromotropy
    • pos inotropy

          

  4. In working myoctes, phase 0 of AP is rapid depol caused by ___I(Na)

          

  5. I(f) is turned on by ___.decr rt of phase 4 depol in pacemaker cells

          

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