Canonical Question

Cardiac Cycle

V5 D2.ii Historical V4 G2.iii 1 appearance

Master answer

Normal Values:

  • AP Duration 200-250ms
  • ARP 200ms
  • RRP 50ms

RMP -90
Established and maintained by:

  • Na/K-Atpase
  • Na/Ca antiporter
  • Ca ATPase

Threshold potential -65mv

http://www.nataliescasebook.com/tag/cardiac-action-potentials

<To be updated>

Gladwin 2016

Answer by Gladwin

Exam appearances

ExamExact wordingRelationshipSuccess
2010B Q23 Describe the ionic events associated with a ventricular cardiac action potential (80% of marks). Outline how the action potential relates with the mechanical events of the cardiac cycle (20 % marks). historical_member —