Overview

Content List SECTION 1: INTRODUCTION & OVERVIEW 1.1 Functions of the Cardiovascular System 1.1.1 Transport, protection, and regulation 1.1.2 Components: heart, blood vessels, blood 1.2 Functional Anatomy of the Heart 1.2.1 Chambers, valves, septa 1.2.2 Layers: pericardium, myocardium, endocardium 1.2.3 Coronary circulation 1.2.4 Story-based intro: ""The journey of a red blood cell from toe to brain"" SECTION 2: PHYSIOLOGY OF CARDIAC MUSCLE 2.1 Properties of Cardiac Muscle 2.1.1 Autorhythmicity, excitability, contractility, conductivity 2.1.2 Intercalated discs and functional syncytium 2.2 Action Potential of Cardiac Muscle 2.2.1 Contractile fibers: phases 0-4 2.2.2 Pacemaker cells (SA node): slow depolarization and spontaneous firing 2.2.3 Ionic basis and differences 2.3 Excitation-Contraction Coupling in the Heart 2.3.1 Role of calcium, sarcoplasmic reticulum 2.3.2 Refractory period: importance in rhythm and protection SECTION 3: CONDUCTION SYSTEM OF THE HEART 3.1 Components of the Conduction System 3.1.1 SA node, AV node, bundle of His, bundle branches, Purkinje fibers 3.1.2 Sequence of activation 3.2 Pacemaker Activity 3.2.1 SA node as dominant pacemaker 3.2.2 Latent pacemakers and overdrive suppression 3.3 Electrocardiogram (ECG) 3.3.1 Waves (P, QRS, T), intervals and segments 3.3.2 ECG leads and normal recordings 3.3.3 Clinical application: arrhythmias, MI diagnosis 3.3.4 OSCE Practice: ECG interpretation checklist SECTION 4: CARDIAC CYCLE 4.1 Phases of the Cardiac Cycle 4.1.1 Atrial systole, ventricular systole (isovolumetric contraction, ejection), diastole (isovolumetric relaxation, rapid filling, reduced filling) 4.1.2 Pressure and volume changes 4.1.3 Heart sounds: S1-S4 4.1.4 Diagrams: Wiggers diagram 4.2 Jugular Venous Pulse (JVP) 4.2.1 a, c, v waves 4.2.2 Clinical relevance in cardiac failure 4.3 Heart Sounds and Murmurs 4.3.1 Mechanism, timing, auscultation areas 4.3.2 Innocent vs. pathological murmurs 4.3.3 Spot Exam Aid: Auscultation locations diagram SECTION 5: CARDIAC OUTPUT & ITS REGULATION 5.1 Cardiac Output (CO), Stroke Volume (SV), Heart Rate (HR) 5.2 Factors Affecting CO 5.3 Venous Return SECTION 6: HEMODYNAMICS 6.1 Principles of Blood Flow 6.2 Arterial Pressure 6.3 Venous Pressure SECTION 7: BLOOD PRESSURE & ITS REGULATION 7.1 Short-Term Regulation 7.2 Long-Term Regulation 7.3 Hypertension SECTION 8: REGIONAL CIRCULATIONS 8.1 Coronary Circulation 8.2 Cerebral Circulation 8.3 Pulmonary Circulation 8.4 Renal, Splanchnic, Skin, and Skeletal Muscle Circulation SECTION 9: PHYSIOLOGY OF EXERCISE AND CVS 9.1 Effects of Exercise on CVS 9.2 CVS Changes in Dynamic vs. Static Exercise SECTION 10: CVS SHOCK, FAILURE & PATHOPHYSIOLOGY 10.1 Circulatory Shock 10.2 Congestive Heart Failure (CHF) 10.3 Cardiac Arrest & Resuscitation SECTION 11: EXAM PRACTICE ZONE 11.1 MCQs with Explanations 11.2 SEQs, Essays, Viva Prep 11.3 OSCE & Spot Practice SECTION 12: STORIES, DIAGRAMS & MEMORY TOOLS 12.1 Clinical Stories 12.2 Diagrams and Flowcharts 12.3 Mnemonics

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