1112CARDIAC CYCLECardiac Cycle PhysiologyThe human heart consists of Biology Diagrams The Cardiac Cycle: An Overview. Before we dive into the phases, let's take a moment to understand what the cardiac cycle actually is. Simply put, the cardiac cycle is the sequence of events that happen during one heartbeat. It involves both the contraction (systole) and relaxation (diastole) phases of the heart's chambers. 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 heartbeat and ends at the beginning of another. The process begins as early as the 4th gestational week when the heart first begins contracting.. Each cardiac cycle has a diastolic phase (also called Having spent years studying human anatomy and physiology, I often think of the heart as not just an organ, but a true virtuoso a master performer orchestrating the concert of life. So, let's take a deep dive into the fascinating world of the cardiac cycle, exploring its phases and their immense significance within the circulatory system.
Let us explain the cardiac cycle, breaking down its stages with detailed insights into the phases of your heart's rhythmic cycle. What Is Human Heart Anatomy? To define the cardiac cycle, you have to understand the human heart anatomy. The human heart is a muscular organ about the size of your fist. It is located slightly left of the chest. In measuring the output of the heart, there are two relevant parameters: heart rate and stroke volume. Heart rate is how many cardiac cycles there are per minute. We usually measure this as a pulse. A normal pulse is considered to be 72 beats per minute (bpm). Stroke volume is how much blood is ejected from the heart with each cardiac cycle.
What Are The Phases Of The Cardiac Cycle Described In The Physiology ... Biology Diagrams
The human cardiac cycle consists of four main phases. These are-Atrial Systole; Ventricular Systole; Atrial Diastole, and; Ventricular Diastole; In addition to these four main phases, there is an intermediate phase known as protodiastole that marks the end of systole and the beginning of diastole. Figure: Different phases of cardiac cycle The Cardiac Cycle Video. The entire cardiac cycle can be seen in the following animation, which tracts the cardiac cycle along with the pressure and volume of different chambers. Cardiac Cycle Animated. An import tool to measure the cardiac cycle is the electrocardiogram, which can be seen as the green line on the above graph. The Phases of the Cardiac Cycle. The cardiac cycle consists of several phases, which can be primarily broken down into two main sections: diastole and systole. Let's explore these components in a friendly, approachable way. 1. Atrial Systole. Picture this: you're at a concert, and the band just finished playing an encore.
