How does the delay of the impulse at theatrioventricular node contribute to cardiac function?

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: 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 are the mechanisms that assist in returning venous blood to the heart?

A: The most important transport liquid in the human body is blood. This is circulated from heart to…

Q: How is the return of venous blood to the heart accomplished?

A: The veins (blood vessels) that return the blood to the heart. The pressure developed in the veins…

Q: Why is it necessary for cells of the cardiac atria and ventricles to contract in a coordinated…

A: Introduction :- Blood from the veins enters the two atria, which have thin walls. The heart's two…

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: Draw the pressure changes along the systemic and pulmonaryvascular systems during the cardiac cycle?

A: Along the systemic and pulmonary vascular systems during the cardiac cycle  the pressure which…

Q: How is cardiac output calculated?

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

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 Preload and Afterload in the cardiac output of a human heart?

A: Preload is the initial stretching of the cardiac myocytes (muscle cells) prior to contraction. It is…

Q: Where does the thoracic aorta begin?

A: The heart is the primary circulatory organ of the body that comprises cardiac muscle tissue. The…

Q: How does each ECG wave, interval, and segment relate to contraction (systole) and relaxation…

A: Electrocardiogram (ECG) is used to measure the regularity of heartbeats and also the size and…

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: What effects does the parasympathetic nervous system have on cardiac output?

A: The cardiovascular system plays the part in conveying the blood through vessels to and from all…

Q: Predict the potential effects of right-sided heart failure (failure of the right ventricle to pump…

A: When the right side of the heart does not pump blood as properly, the right sided heart failure…

Q: Why is the cardiac action potential propagated more slowly in an AV node cell then in an atrial or…

A: Cardiac action potential  It refers to the short alteration in the voltage i.e. membrane potential…

Q: What are the principal inputs to and outputs from the cardiovascular center?

A: Cardiovascular centre It is a part of the human brain which regulates heart rate through the nervous…

Q: Explain Mechanical Events of the Cardiac Cycle?

A: The cardiac cycle involves the events that occur in the heart chambers in a single heartbeat. The…

Q: What is pulse amplitude in terms of cardiology?

A: Cardiology is a branch of medicine dealing with the study of diseases as well as abnormalities…

Q: What are the relative velocities of flow through the various vessel types of the systemic…

A: Systemic circulation carries pure/oxygenated blood from the left ventricle (through the arteries) to…

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 kind of catabolism occurs in the heart?

A: The heart pumps blood through a system of blood vessels, called the circulatory system. The heart…

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: Where are AV valves located within the heart? Where are semilunar valves located within the heart?

A: The heart can be defined as the muscular organ about the size of fist that is situated just behind…

Q: How are the two heart sounds produced during cardiac cycle? Which one of these is of longer…

A: The cycle that involves the end of one heartbeat and initiation of the second heartbeat is called…

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 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: Define Ventricular Tachycardia?

A: Introduction  Heart is highly muscular in nature and composed of smooth cardiac muscles which are…

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: List the AV Conduction defects?

A: Introduction: AV conduction disorder is the collection of disorders where the conduction of the…

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: Why is it important that the AV node delay the electricalimpulse moving from the SA node and the…

A: The  AV node is a part of the electrical conduction system of the heart that coordinates the top of…

Q: What is vasomotion? What is autoregulation of local bloodflow?

A: Answer: Introduction: Vasomotion controls liquid and nutrient exchange amongst the vascular system…

Q: Pressure changes that occur during the cardiac cycle are responsible for what two physiologic…

A: The cardiac cycle is the time interval between atria contraction and ventricular relaxation. Fluids,…

Q: What is the significance of the difference in thickness between the wall of the aorta and the wall…

A: Introduction: The largest artery present in human body is the aorta which starts from the top of the…