AI Study Pack
cardiac cycle
BiologyCBSEClass 12
AI-generated cheatsheet with key concepts, formulas, and common mistakes — plus audio, MCQs, mind maps & more.
Cardiac Cycle Cheat Sheet
Key Definitions
- Cardiac Cycle: The sequence of events in one complete heartbeat, including contraction and relaxation of the heart.
- Systole: Phase of contraction of the heart muscles.
- Diastole: Phase of relaxation of the heart muscles.
- Stroke Volume (SV): Volume of blood pumped from the left ventricle per beat.
Important Concepts
Phases of the Cardiac Cycle
- Atrial Systole: Atria contract, pushing blood into the ventricles.
- Ventricular Systole: Ventricles contract, ejecting blood into the aorta and pulmonary artery.
- Diastole: Heart muscle relaxes; chambers fill with blood.
Heart Sounds
- "Lub": Closure of AV valves during ventricular systole.
- "Dub": Closure of semilunar valves during ventricular diastole.
Key Formulas
CO = SV × HR- CO: Cardiac Output (liters/minute)
- SV: Stroke Volume (milliliters)
- HR: Heart Rate (beats/minute)
Common Mistakes to Avoid
Common Mistake: Confusing systole and diastole phases.
Memory Tricks
Tip: "A Very Smart Dog" — Atrial Systole, Ventricular Systole, Diastole.
Key Diagrams
Atrial Systole
| |
V V
[Atria]-------> [Ventricles]
| |
| |
[Ventricular Systole]
|
V
[Aorta] [Pulmonary Artery]
\ /
\ /
[Diastole]
This pack also includes
Audio Podcast
5-min summary
10 MCQs
Exam-pattern
Mind Map
Visual connections
Flashcards
Spaced repetition
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