Media in category "Wiggers diagram" The following 14 files are in this category, out of 14 total. 2029 Cardiac Cycle vs Heart Sounds.jpg 1,612 × 1,219; 408 KB. Cardiac Cycle Left Ventricle ar.png 669 × 486; 19 KB. Cardiac cycle pressure only zh tw.png 691 × 265; 14 KB.A Wiggers diagram showing the events of the cardiac cycle. 2 How to approach heart murmurs. It is important to have a structured approach to interpreting heart murmurs during a cardiovascular examination. If a murmur is heard during auscultation, consider the following questions: When during the cardiac cycle is the murmur heard?Feb 10, 2023 · Gulfcoast Ultrasound Institute Instructor Christie Jordan, BS, RDCS, RCS, RCIS, FASE explains the Wiggers Diagram-Cardiac Cycle.Now Registering for our Intro... for >90 years, the Wiggers diagram has been a fundamental tool for teaching cardiovascular (CV) physiology, with some of his earliest descriptions of the heart and circulation published in 1915 ().The lack of significant additions or changes from Dr. Wiggers' original observations is a testament to his careful work. In describing the …The Wright table is introduced as a novel tool for teaching and learning the cardiac cycle. It supplements the nearly 100-yr-old Wiggers diagram, which is information rich but difficult for many students to learn. The Wright table offers a compact presentation of information, viewable both in terms of how 1) each compartment’s pressures and flows …May 5, 2014 · 267K views 9 years ago Human Physiology. An in-depth look at Wiggers Diagram. Examining the cardiac cycle, Electrocardiogram, Aortic Pressure, Ventricular Pressure, Atrial Pressure,... 23 991 views 1 year ago Cardiovascular Here we walk you through the classic Wiggers diagram of actions occurring throughout a single cardiac cycle. This includes the ECG, atrial and ventricular...Whether you’re struggling with routing that long serpentine belt for your vehicle or stuck with a broken belt on your snowmobile, having the right belt routing diagrams makes the p...Diagram - Wiggers diagram. This shows the cardiac cycle, including the various pressures and volumes around the heart, an ECG trace (showing the electrical activity of the heart) and a phonocardiogram (showing the heart sounds - each sound corresponds to a valve shutting). It is excellent for understanding what happens in each …The Wiggers Diagram: Hemodynamic Changes in Cardiac Amyloidosis J Card Fail. 2022 Jul 12;S1071-9164(22)00580-2. doi: 10.1016/j.cardfail.2022.06.008. Online ahead of print. Authors Nicholas Chan 1 , Mazen Hanna 1 , Mathew S Maurer 2 Affiliations 1 Heart, Vascular, and ...Wiggers diagram: A Wiggers diagram is a regular illustration adapted in teaching physiology of cardiac studies. The X-axis in the Wiggers diagram is used to plot time, …Valves within the heart direct blood movement, which leads to organized propulsion of blood to the next chamber. This rhythmic sequence causes changes in pressure and volume that are often seen graphically …Repairing an electrical problem with your oven is definitely easier when you find the right oven wiring diagram. Check out this guide to oven wiring problems, and to finding those ...The Wiggers Diagram Depending on the source, Wiggers’ diagrams can vary in detail and number of variables presented. Regardless, all pro-vide essential information on how the normal heart functions with a minimum description of pressure changes during phases of diastole and systole. Figure 1A accomplishes this by show-The Wiggers diagram, named after its developer, Carl Wiggers, is a composite of several graphs related to the cardiac cycle. Physiologists use the information the Wiggers diagram provides to interpret and comprehend the changing events associated with each part of …This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood flow …Are you looking to create Visio diagrams online? Whether you’re a business professional, a student, or just someone who needs to visually represent ideas and concepts, creating dia...Original upload log []. This image is a derivative work of the following images: File:Wiggers_Diagram.svg licensed with Cc-by-sa-2.5 . 2012-03-20T19:38:55Z Xavax 1053x841 (31177 Bytes) some corrections: text, colors and positons of text objects; 2012-03-20T12:56:05Z Xavax 1053x841 (30187 Bytes) now 200%; 2012-03-20T11:27:17Z Xavax …Watch this to never forget Wiggers diagram , cardiac cycle and LV pressure volume loop. Lets simplify this ever confusing topic of CVS Physiology with easy t...step 6. -atrial contraction raises both the atrial and ventricular pressures slightly -also adds a small amount of ventricular filling -diastole divided into three phases:1. rapid filling2. slow filling3. atrial contraction. step 7. next, the wave of depolarization gets through the AV node and activates the ventricular muscle fibers. Oct 9, 2016 ... ... by going to the PLAYLIST: • Physio 11- Cardiac Cycle. Cardiac cycle 3- Wiggers diagram. 12K views · 7 years ago ...more. Wendy Riggs. 96.3K.Advertisement The classic fluorescent lamp design, which has fallen mostly by the wayside, used a special starter switch mechanism to light up the tube. You can see how this system...The Wiggers Diagram has been the standard tool for teaching the events of the cardiac cycle for nearly 100 years. However, as it often displays related cardiac cycle events on different figures in the diagram, many students have trouble grasping how these components work together to pump blood into arteries. The Wright Cardiac Cycle …23 991 views 1 year ago Cardiovascular Here we walk you through the classic Wiggers diagram of actions occurring throughout a single cardiac cycle. This includes the ECG, atrial and ventricular...The Wiggers diagram depicts the events taking place during the cardiac cycle. (Modified, with permission, from Mohrman DE, Heller LJ. Cardiovascular Physiology. 7th ed. New York, NY: McGraw-Hill; 2010.) + + + Ventricular Diastole + + In diastole, the ventricles fill with blood, which occurs in two phases. In the first phase, the ventricle fills passively as the …9. Ventricular contraction. Ventricular pressure, atrial pressure, close AV valve first heart sound as lub. 10. Rapid increased ventricular pressure. 11. All valves closed, no change in volume. 12. Ventricular pressure>aortic pressure, aortic valve open eject blood into aorta. In a patient with complete atrioventricular block and junctional escape rhythm that showed near‐isorrhythmic atrioventricular dissociation, the characteristic pattern of Doppler spectra of mitral inflow, pulmonary veins flow, and tricuspid regurgitation profile could help to analyze heart activation sequence and its related hemodynamics to confirm a somewhat doubtful …Wiggers diagram. cardiac amyloidosis. hemodynamics. pressure-volume relationship. A 77-year-old gentleman with cardiac amyloidosis (CA) presents with dyspnea on exertion, abdominal bloating, and lower extremity edema. Vital signs show blood pressure 109/72 (mean 84 mmHg), heart rate 75 beats per minute, respiratory rate 20, …Jun 1, 2014 · The heart is a dynamic organ and is characterized by simultaneous cardiac events happening within a cardiac cycle. Based on the Wiggers diagram (Figure-1) [1], the relationship between electrical ... Draw and learn Wiggers diagram. Most important diagram in Bioinstrumentation.https://en.wikipedia.org/wiki/Wiggers_diagram00:00 Wiggers Diagram Video Recap01... A Bohr diagram shows the distribution of an atom’s electrons among different energy levels, or electron shells. Each diagram also features the number of protons and neutrons in the...A Wiggers diagram, named after its developer, Dr. Carl J. Wiggers, is a standard diagram that is used in teaching cardiac physiology. In the Wiggers diagram, the X-axis is used to plot time, while the Y-axis contains all of the following on a single grid: Blood pressure. Wigger’s Diagram Worksheet The objective of this lab exercise is to help ...A Wiggers diagram is a standard diagram used in cardiac physiology to illustrate the association between aortic pressure, ventricular pressure, atrial pressure, volumes and ECG waveforms. Learn the principles of cardiac physiology, electrocardiography and ECG interpretation. The action potential and conduction system are also discussed.Nov 10, 2022 · The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most intimidating figures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood flow down pressure gradients and the structure-function ... Figure 2. Wiggers diagram showing pressure, volume, Doppler signal, ECG and AV valves during the cardiac cycle. Doppler recording of mitral valve flow during diastole. (a) = active atrial filling; (b) = increased atrial pressure due to bulging of mitral valve into the left atrium, when valve closes; (c) = passive atrial filling.Draw and learn Wiggers diagram. Most important diagram in Bioinstrumentation.https://en.wikipedia.org/wiki/Wiggers_diagram00:00 Wiggers Diagram Video Recap01...The Wiggers diagram. From top to bottom, the lines show: 1) aortic pressure, 2) ventricular pressure, 3) atrial pressure, 4) electrocardiogram, 5) mitral and aortic valve opening and closing, and 6) …Volume of the ventricles falls as the blood is ejected. Volume of the ventricles begins to increase as the ventricles relax. 1. Pressure peaks just before blood is ejected. 2. Pressure falls as blood is ejected. Start studying Chapter 14: Wiggers Diagram. Learn vocabulary, terms, and more with flashcards, games, and other study tools.6. Wiggers diagram The X axis is used to plot time, The Y axis contains all of the following on a single grid: Blood pressure Aortic pressure Ventricular pressure Atrial pressure Ventricular volume Electrocardiogram Arterial flow (optional) Heart sounds (optional) JVP Illustration of the coordinated events makes it easier to correlate the …Wiggersův diagram. Wiggersův diagram: červená = tlak v aortě. modrá = tlak v komoře. žlutá = tlak v levé předsíni. EKG. Wiggersův diagram je grafické zobrazení časového průběhu důležitých měřitelných veličin fungování lidského srdce .Nov 10, 2022 · The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most intimidating figures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood flow down pressure gradients and the structure-function ... Visio diagrams are an excellent way to visually represent complex ideas, processes, or systems. Traditionally, creating these diagrams required installing the Microsoft Visio softw...Wiggers Diagram: Wiggers diagram is a graphical representation of the events during each phase of the cardiac cycle; Key points to note: Aortic diastolic pressure occurs just …Define diastasis. Middle stage of diastole during cycle of heart beat, where initial passive filling of the heart's ventricles has slowed down, but before the atria contract to complete the filling. What is the Wigger's diagram good for showing? That the electrical activity (recorded on an EKG) actually occurs well before mechanical contraction ...Dec 1, 2020 · The Wright table is introduced as a novel tool for teaching and learning the cardiac cycle. It supplements the nearly 100-yr-old Wiggers diagram, which is information rich but difficult for many students to learn. The Wright table offers a compact presentation of information, viewable both in terms of how ) each compartment's pressures and ... The Wiggers diagram shows the temporal relationship between electrical and mechanical events during a heartbeat, including changes in pressure and volume in the heart. The pressure values in the right heart are lower than in the left heart because the right heart pumps blood only to the pulmonary circulation, while the left heart pumps blood to ...First phonocardiogram sound. Wiggers diagram S. Second phonocardiogram sound. Wiggers diagram T. Third phonocardiogram sound. Atrial C wave. Increase in atrial pressure due to blood in atria crashing against closure of AV valve. Atrial V wave. Maximal pressure in left atria just before AV valve opens.Nov 26, 2023 · Wiggers diagram 위의 그림이 그 Wiggers diagram이다. 이는 심전도나 심장음의 특정 시점들이 심장 주기에서 지금이 어떤 시기인지 알 수 있게 해주는 중요한 구분자 역할을 하기 때문에, 보고 전체적인 심장 주기를 이해하기 편리한 장점이 있다. Dec 11, 2020 · Summary. Description. Wiggers Diagram IT.svg. English: A Wiggers diagram, showing the cardiac cycle events occuring in the left ventricle. In the atrial pressure plot: wave "a" corresponds to atrial contraction, wave "c" corresponds to an increase in pressure from the mitral valve bulging into the atrium after closure, and wave "v" corresponds ... Restoring core principles to the cardiac cycle explanation. Case in point is the Wiggers diagram, a complex stacked graph showing temporal changes in atrial, ventricular, and arterial pressures ...Dec 10, 2019 · These didactic lectures usually use PowerPoint slides, with pictures and animations. For instance, the Wiggers diagram is often used to teach the concept of the cardiac cycle in a cardiovascular physiology class. Teaching the cardiac cycle to students can be challenging for many teachers. Consider the Wiggers diagram, for example. Here we walk you through the classic Wiggers diagram of actions occurring throughout a single cardiac cycle. This includes the ECG, atrial and ventricular pr...Nov 16, 2023 ... Hello my Wiggers Diagrams, In the video we are going over the WIggers Diagram. I developed a method to easily understand the Wiggers Diagram ...Microsoft's SharePoint provides a number of business tools designed to help organize and manage business personnel. Using SharePoint to create an org chart, or organizational chart...The Wright table is introduced as a novel tool for teaching and learning the cardiac cycle. It supplements the nearly 100-yr-old Wiggers diagram, which is information rich but difficult for many students to learn. The Wright table offers a compact presentation of information, viewable both in terms of how 1) each compartment’s pressures and flows …Dec 11, 2011 · Description. English: A Wiggers diagram, showing the cardiac cycle events occuring in the left ventricle. In the atrial pressure plot: wave "a" corresponds to atrial contraction, wave "c" corresponds to an increase in pressure from the closed mitral valve bulging into the atrium during ventricular systole, and wave "v" corresponds to passive ... A Wiggers diagram, named after its developer, Dr. Carl J. Wiggers, is a standard diagram that is used in teaching cardiac physiology. In the Wiggers diagram, the X-axis is used to plot time, while the Y-axis contains all of the following on a single grid: Blood pressure. Wigger’s Diagram Worksheet The objective of this lab exercise is to help ...for >90 years, the Wiggers diagram has been a fundamental tool for teaching cardiovascular (CV) physiology, with some of his earliest descriptions of the heart and circulation published in 1915 ().The lack of …A Wiggers diagram is a standard diagram used in cardiac physiology to illustrate the association between aortic pressure, ventricular pressure, atrial pressure, volumes and ECG waveforms. Learn the principles of cardiac physiology, electrocardiography and ECG interpretation. The action potential and conduction system are also discussed.The Wiggers diagram. From top to bottom, the lines show: 1) aortic pressure, 2) ventricular pressure, 3) atrial pressure, 4) electrocardiogram, 5) mitral and aortic valve opening and closing, and 6) …This video is Part 5/5 on the cardiac cycle with all the changes that happen during each cycle. I have broken it down into 6 steps.🫀I hope it helps! ☀️🌟Wh...Schematics diagrams are an essential tool in the field of electrical engineering. They provide a visual representation of a circuit or system, making it easier for engineers to und...Sep 6, 2022 · This video is Part 5/5 on the cardiac cycle with all the changes that happen during each cycle. I have broken it down into 6 steps.🫀I hope it helps! ☀️🌟Wh... An effective warehouse layout design involves creating a diagram, spatial planning, choosing equipment, traffic flow plans, and testing Retail | How To Download our free workbook Y...The Wiggers diagram is derived from the experimental work of Carl J. Wiggers, MD (1883–1963), who chose to become an academic physician-scientist rather …Wiggers Diagram. 1: Isovolumic: Ventricular pressure exceeds that of the atria, causing the AV valves to close. The contraction occurs while the ventricle is no longer in communication with the atria/vascular system and there is no change in volume, thus isovolumic. 2: Ventricular pressure slightly exceeds that of the aorta = opening of the ...May 5, 2014 · 267K views 9 years ago Human Physiology. An in-depth look at Wiggers Diagram. Examining the cardiac cycle, Electrocardiogram, Aortic Pressure, Ventricular Pressure, Atrial Pressure,... Wiggers Diagram. 1: Isovolumic: Ventricular pressure exceeds that of the atria, causing the AV valves to close. The contraction occurs while the ventricle is no longer in communication with the atria/vascular system and there is no change in volume, thus isovolumic. 2: Ventricular pressure slightly exceeds that of the aorta = opening of the ...Dec 11, 2011 · Description. English: A Wiggers diagram, showing the cardiac cycle events occuring in the left ventricle. In the atrial pressure plot: wave "a" corresponds to atrial contraction, wave "c" corresponds to an increase in pressure from the closed mitral valve bulging into the atrium during ventricular systole, and wave "v" corresponds to passive ... The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most frustrating figures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by f … This diagram came to be known as the Wiggers diagram. It is still the most commonly used diagram to teach cardiac cycle today [21]. A paper published by the Wright brothers in 2020 introduced the Wright table, which is a novel tool for teaching and learning the cardiac cycle. This table supplements the 100-yr-old Wiggers diagram, which is usually difficult …Wigger's diagram. Shows multiple parameters of cardiac flow and volume simultaneously. — We'll focus on the events of the left side of the heart, but know that the right side is …Oct 17, 2015 ... Schneid Guide to Effects of Heart Valve Lesions on the Wiggers Diagram. 18K views · 8 years ago ...more. Steve Schneid. 4.48K.Wigger Diagram Set-up: Along the bottom, indicate that we'll track time in seconds from 0 to 0.8, which is the duration of a typical healthy cardiac cycle. At the top of the graph, show that we'll track events of the left atrium and left ventricle, as follows: – The left atrium is in systole from time 0 – 0.1, then enters diastole. – The ... The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most intimidating fig-ures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood ow ...Dec 2, 2023 · The Wiggers diagram demonstrates the pressure and volume changes throughout the cardiac cycle and how these changes correlate with the ECG and cardiac auscultation (S1-S4). Fig. 2.1 Wiggers diagram showing a visual representation of the cardiac cycle showing heart sounds, pressure, left ventricular (LV) volume, and ECG comparison during. Part 3 in a 8 part lecture on the CARDIAC CYCLE in a flipped Human Physiology course taught by Wendy Riggs. CC-BY. Watch the whole lecture (all 8 videos) by ...Wiggers diagram of the cardiac cycle, with diastasis marked at top. In physiology, diastasis is the middle stage of diastole during the cycle of a heartbeat, where the initial passive filling of the heart's ventricles has slowed, but before the atria contract to complete the active filling. Diastasis is the longest phase of cardiac cycle. [1] Nov 10, 2022 · The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most intimidating figures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood flow down pressure gradients and the structure-function ... Nov 16, 2023 ... Hello my Wiggers Diagrams, In the video we are going over the WIggers Diagram. I developed a method to easily understand the Wiggers Diagram ...Oct 30, 2023 · A wiggers diagram is a schematic representation of the cardiac cycle phases and the conducting system of the heart. It shows the atria and ventricles contracting and relaxing, the valves opening and closing, and the pressure and volume changes in the heart chambers. Learn more about the cardiac cycle, the conducting system, and the disorders affecting it with Kenhub. Wiggers Diagram. 1: Isovolumic: Ventricular pressure exceeds that of the atria, causing the AV valves to close. The contraction occurs while the ventricle is no longer in communication with the atria/vascular system and there is no change in volume, thus isovolumic. 2: Ventricular pressure slightly exceeds that of the aorta = opening of the ...Advertisement The classic fluorescent lamp design, which has fallen mostly by the wayside, used a special starter switch mechanism to light up the tube. You can see how this system...Wigger’s diagram: This seemingly complex diagram (Don’t Panic!) is actually a very useful tool to learn the components of the cardiac cycle and how they relate to cardiac exam …Writing can be a complex task, especially when it comes to structuring your sentences effectively. Sentence diagrams are a powerful tool that can help you visualize sentence struct...
for >90 years, the Wiggers diagram has been a fundamental tool for teaching cardiovascular (CV) physiology, with some of his earliest descriptions of the heart and circulation published in 1915 ().The lack of …. By the sea
In a patient with complete atrioventricular block and junctional escape rhythm that showed near‐isorrhythmic atrioventricular dissociation, the characteristic pattern of Doppler spectra of mitral inflow, pulmonary veins flow, and tricuspid regurgitation profile could help to analyze heart activation sequence and its related hemodynamics to confirm a somewhat doubtful …All About Cardiac Rhythms. NurseLifeSOS. $5.00. 12600 AI prompt and a guide explaining how AI works. Very detailed explanation, very suitable for beginners. Angeliquepresents. $3.95.Want all your downloads, streaming video, and other techie media stuff on your TV? Wondering which media center works best for you? Here's a look at the biggies in chart and Venn d...HyperHeart. Interactive animation updated from Flash to HTML 5 by Quentin Roper of Massey University, New Zealand. It is offered to public view under the Creative Commons non-commercial re-use with required attribution license (see below). Click here to position animation. The hemodynamic changes in CA and their clinical consequences are succinctly illustrated by the Wiggers diagram (Fig. 1A), developed by Carl Wiggers,1 which tracks changes in arterial, left atrial and ventricular pressures, and left ventricular vol-umes to reflect the sequence of mechanical events in relation to the electrocardiogram during the ...Diagram Wiggers dinamai Carl J. Wiggers, seorang ahli jantung yang menghabiskan karirnya dalam penelitian dan pengajaran. Selain menjadi direktur Fisiologi di Western Reserve University di Cleveland, Ohio dari tahun 1917 hingga 1953, Dr. Wiggers memegang beberapa posisi kepemimpinan di American Physiological Society, termasuk …This is a brief tutorial of aortic, ventricular, and atrial pressures in the cardiac cycle using a Wiggers diagram. This is a brief tutorial of aortic, ventricular, and atrial pressures in the ... Download scientific diagram | Wiggers diagram. The diagram shows the aortic, atrial and ventricular pressure and the ventricular volume in relation to the ECG signal. (Image source: Wikimedia ...This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood flow …Define diastasis. Middle stage of diastole during cycle of heart beat, where initial passive filling of the heart's ventricles has slowed down, but before the atria contract to complete the filling. What is the Wigger's diagram good for showing? That the electrical activity (recorded on an EKG) actually occurs well before mechanical contraction ...Jan 19, 2016 ... This screencast has been created with Explain Everything™ Interactive Whiteboard for iPad. Wiggers Diagram. 24K views · 8 years ago ...more ...Understand the cardiac cycle with Wigger's diagram. Click here to learn more about the resource and obtain a free copy:www.carepatron.com/templates/wiggers-d...The Wiggers diagram showing simultaneous events of the cardiac cycle in composite graphs is one of the most intimidating fig-ures students encounter in their study of physiology. This paper describes a discovery learning activity that walks students through the construction of the Wiggers diagram by focusing on the core concepts of blood ow ...Wiggers diagram. cardiac amyloidosis. hemodynamics. pressure-volume relationship. A 77-year-old gentleman with cardiac amyloidosis (CA) presents with dyspnea on exertion, abdominal bloating, and lower extremity edema. Vital signs show blood pressure 109/72 (mean 84 mmHg), heart rate 75 beats per minute, respiratory rate 20, …The orbital diagram for sulfur has seven boxes with two arrows pointing in opposite directions and two boxes with one arrow pointing up in each. The arrows represent the 16 electro...Dr. Carl Wiggers' careful observations have provided a meaningful resource for students to learn how the heart works. Throughout the many years from his initial reports, the Wiggers diagram has been used, in various degrees of complexity, as a fundamental tool for cardiovascular instruction. The Wiggers Diagram Depending on the source, Wiggers’ diagrams can vary in detail and number of variables presented. Regardless, all pro-vide essential information on how the normal heart functions with a minimum description of pressure changes during phases of diastole and systole. Figure 1A accomplishes this by show-A Wiggers diagram, named after its developer, Dr. Carl J. Wiggers, is a standard diagram that is used in teaching cardiac physiology. In the Wiggers diagram, the X-axis is used to plot time, while the Y-axis contains all of the following on a single grid: Blood pressure. Wigger’s Diagram Worksheet The objective of this lab exercise is to help ...This is the 1st first video in the Cardiology section dedicated to an important topic.Wiggers Cardiac Diagram.We go through different curves of the Wigger's ... The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as the cardiac cycle (Figure 11.4.1 11.4. 1 ). The period of contraction that the heart undergoes while it pumps blood into circulation is called systole. The period of relaxation that occurs as the chambers fill with blood is called diastole. .