How does each ECG wave, interval, and segment relate to contraction (systole) and relaxation (diastole) of the atria and ventricles?

Q: What is the relationship between end-diastolic ventricular volume and stroke volume in a normal…

A: Human heart is the Center for regulating blood across the body. It is located within the thoracic…

Q: What are Cardiac Action Potentials?

A: Unlike the action potential in skeletal muscle cells, the cardiac nerve impulse isn't initiated by…

Q: Why does the heart spend more time in diastole then in systole?

A: Diastole and systole are the two phases of the cardiac cycle. They occur as the heart beats and…

Q: What causes heart murmurs in systole?

A: Systolic heart murmurs are heart murmurs detected throughout systole, i.e. they start and finish…

Q: Describe how and why cardiac anatomy changes at birth?

A: The cardiovascular system comprises the heart, which is the anatomical pump with its internal parts…

Q: What is ventricular fibrillation?

A: The heart is a muscular organ that is divided into the left and right sides to prevent the mixing of…

Q: What causes heart murmurs in diastole?

A: The circulatory system, in like manner called the cardiovascular structure or the vascular…

Q: What is the blood flow of the heart?

A: Blood is the body fluid that is composed of plasma and formed cell that circulates through the…

Q: What are the characteristics of ventricular tachycardia?

A: The normal resting heart rate can be described as the adults ranges from 60 to 100 beats per minute.

Q: What is known as cardiac output ?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: What is the change in intraventricular pressure between the time the first heart sound begins and…

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: What is Early Diastole?

A: Initially during the cardiac cycle there is relaxation of both the atria and ventricle and during…

Q: What anatomical feature prevents the electrical signal from traveling directly from atrial muscle to…

A: The heart is a muscular organ that is divided into the left and right side to prevent the mixing of…

Q: What is the relationship between wall thickness and function among the various chambers of the…

A: Heart in humans have four chambers with different thickness of the walls. Generally the ventricles…

Q: How does blood composition differ in the right and left ventricle?

A: The heart is the pumping organ that is responsible for circulating the blood to different parts of…

Q: Define end-diastolic volume, end-systolic volume, and stroke volume. How are they related?

A: BASIC INFORMATION  HEART  it is a muscular organ  it is present in a space in between the lungs…

Q: What is diastole?

A: The pumping of blood in the body is a function performed by heart. Now, the pressure with which the…

Q: How does mean arterial pressure differ from systolic pressure and diastolic pressure?

A: Blood pressure is defined as the quantity of force exerted by the flowing blood over the inner walls…

Q: What does v1 v2 v3 mean in ECG?

A: Electrocardiography refers to the method of recording the electrical activity of the heart. A…

Q: What is the P wave in ECGs?

A: Step 1 ECG is an electrocardiogram. An electrocardiogram is a graphic recording of electrical…

Q: What are the Effects of arteriolar vasodilation or vasoconstriction on capillary blood pressure in a…

A: Arteriolar vasodilation: It is used in the medical line for the purpose of medication, a syndrome…

Q: How are events of the cardiac cycle reflected in pressure and volume changes within the cardiac…

A: The cardiac cycle includes coordinated contraction and relaxation of heart chambers.

Q: What is an electrocardiogram (ECG) and how it works?

A: The vascular system is responsible for pumping and supplying blood to all parts of the body. In…

Q: What are five histological features of sinusoidal capillaries?

A: Sinusoidal capillaries are also known as discontinuous capillaries. Such capillaries have open-pore…

Q: How does the long plateau of the cardiac action potential develop and what is its functional role?

A: Hi, Thanks For Your Question.  Answer : A Transient Shift In Voltage (Membrane Potential) Across The…

Q: Why are the left and right coronary vessels considered the major coronary vessels?

A: The coronary vessels are the blood vessels which are responsible for supplying blood to the heart.

Q: What areas of the heart are deprived of blood when there is a blockage in the posterior…

A: Posterior Interventricular artery is a coronary artery, which is also known as the Posterior…

Q: How is the shape of the ventricular rhythm determined?

A: The ventricular rhythm is also known as an idioventricular rhythm (IVR). It is a cardiac rhythm that…

Q: In a developing chicken embryo, from  which  layer  of  the  hypomere  is  the  endocardium  and…

A:

Q: how does the delay of the impulse at the atrioventricular node contrribute to cardiac function?

A: The AV node serves as an electrical relay station, slowing the electrical current sent by the…

Q: Why is atrial repolarization not observed in the ECG?

A: ECG stands for electrocardiography. It is a process to produce an electrocardiogram. To check for…

Q: What is the difference between the systole and diastole and their pressure?

A: The cardiac cycle involves events and patterns of contraction and relaxation of heart to complete…

Q: How is local blood flow dependent on total blood flow?

A: Blood flow refers to the circulation of blood through the vessels from arteries to the capillaries…

Q: What is the functional significance of the difference in thickness of the ventricular walls?

A: The ventricle is one of the two large chambers towards the bottom of the heart that collects and…

Q: What is the significance of the difference in thickness of the ventricular walls?

A: The ventricle is one of the two large chambers towards the bottom of the heart that collects and…

Q: What is systolic and diastolic pressure in a healthy man?

A: The cardiac cycle is referred to as one heartbeat that consists of one cycle of contraction and…

Q: How do High-pressure environments have a profound effect on the cardiopulmonary system?

A: The heart, as well as the arteries, veins, and capillaries that allow blood to flow throughout the…

Q: How is Cardiac Index?

A: Cardiac index (CI) is the amount of blood pumped from the left ventricle per minute per unit body…