STUDY GUIDE LECTURES 1-12

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Department
Biological Sciences
Course
BIOC33H3
Professor
Stephen Reid
Semester
Fall

Description
1Answers to Study Guide Questions Lecture 112 2013Lecture 1 Electrical Conduction within the HeartWhich changes in ionic conductance permeability accompany the various phases of the pacemaker potential3 4 1 2 a In zone 1 a decrease in P and an increase in P In zone 2 an increase in P KNaCab In zone 1 a decrease in P and an increase in P In zone 2 an increase in P KCaNac In zone 3 a large increase in P In zone 4 an increase in P and a decrease in P NaKCa In zone 4 an increase in P and a decrease in P d In zone 3 a large increase in PCaKNae A and D The action potential that travels along the conduction pathway of the heart moves upward into theventricles from the apex of the heart via thea AV node b SA node c Purkinje Fibres d Atrioventricular valves e Bundle of His2Lecture 2 Cardiac Action Potential and the ElectrocardiogramWhich changes in ionic conductance permeability DO NOT accompany the various phases of the cardiac action potentiala In zone 0 an increase in PNab In zone 1 a decrease in P a decrease in P and an increase in P NaKCac In zone 2 a decrease in P and an increase in P NaCa and a decrease in P d In zone 3 an increase in PKCae C and DThe P and T waves of the ECG represent andrespectivelya Ventricular repolarisation and atrial depolarisationb Atrial depolarisation and atrial repolarisation c Ventricular depolarisation and atrial repolarisationd Atrial depolarisation and ventricular repolarisatione Atrial depolarisation and ventricular depolarisation The following ECG trace is representative of what cardiac disorder a Atrial flutterb Atrial fibrillationc Ventricular fibrillation d Wandering atrial pacemaker e Second degree heart block
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