Cardiac cycle phases: Definition, systole and diastole | Kenhub
Oct 30, 2023 · The cardiac cycle is defined as a sequence of alternating contraction and relaxation of the atria and ventricles in order to pump blood throughout the body. It starts at the beginning of one …
What is the cardiac cycle and how does it work, including the role of ...
Jan 12, 2026 · The cardiac cycle represents the complete sequence of mechanical and electrical events that occur during one heartbeat, consisting of coordinated atrial and ventricular contraction (systole) …
Cardiac cycle - Wikipedia
Assuming a healthy heart and a typical rate of 70 to 75 beats per minute, each cardiac cycle, or heartbeat, takes about 0.8 second to complete the cycle. [2][3] Duration of the cardiac cycle is …
Cardiac Cycle and its 5 Phases - Microbe Notes
Aug 13, 2023 · The cardiac cycle is a continuous closed sequence of events that results in the continuous and systematic contraction and relaxation of the chambers of the heart. It includes all the …
19.3 Cardiac Cycle – Anatomy & Physiology 2e
The cardiac cycle comprises a complete relaxation and contraction of both the atria and ventricles, and lasts approximately 0.8 seconds. Beginning with all chambers in diastole, blood flows passively from …
The Cardiac Cycle - Pressures in The Heart - TeachMePhysiology
Nov 6, 2025 · At rest, the heart pumps around 5L of blood around the body every minute, but this can increase massively during exercise. To achieve this high output efficiently, the heart works through a …
Cardiac Cycle- Phases, Diagram, and Physiology of the Cardiac Cycle ...
Jul 23, 2025 · The cardiac cycle is the complete sequence of events in a single heartbeat, including ventricular contraction and relaxation, ensuring blood circulation. It is controlled by electrical signals …
Cardiac Cycle - CV Physiology
There are two basic phases of the cardiac cycle: diastole (relaxation and filling) and systole (contraction and ejection). Diastole represents the period when the ventricles are relaxed (not contracting).
Understanding the 5 Phases of the Cardiac Cycle
Apr 29, 2025 · The cardiac cycle is a process that ensures the continuous flow of blood throughout the body, delivering oxygen and nutrients to tissues while removing waste products. Understanding its …
Cardiac cycle – Basic Human Physiology
The cardiac cycle, which begins when both the atria and ventricles are relaxed (diastole), can be broken up into four phases – filling, isovolumic contraction, ejection, and isovolumic relaxation.