a) Referring to the Figure , which part of the heart's electrical conduction is known as the “pacemaker” of the heart? b)Explain how D controls atria and ventricles which causes ventricular systole.

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Q: Estimate the ejection fraction of the failing heart at a typical normal end-diastolic volume?

A: Ejection fraction estimation - It is the measurement of the amount of blood pump from left ventricle…

Q: Pacemaker in heart is?

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

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Q: Explain how the heart is a double pump and why this is significant

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Q: Describe the four specific properties of cardiac cells of the heart?

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

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Q: What type of tissue composes the fibrous skeleton of the heart, and how is it organized?

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Q: What are the characteristic electrocardiographic features of the common cardiac dysrhythmias?

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Q: What causes heart murmurs in diastole?

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

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Q: What is the importance and the physiology of the cardiac conduction system?

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Q: Describe the cardiac center and innervation of the heart.

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

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Q: List the divisions of the cardiac cycle?

A: In order to pump the blood, a sequence of contractions and relaxing of the atria and ventricles is…

Q: Trace the pathway of blood flow through the heart, and describe the major factors that ensure…

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Q: What causes heart murmurs?

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Q: Which of the four chambers of the human heart has the thickest muscular walls?

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Q: Which part of the cardiovascular system contains the most blood? Which part provides the greatest…

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Q: How do gap junctions and intercalated disks aidcontraction of the heart?

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Q: Which layer of the heart is affected in endocarditis?

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Q: Why are changes in LVEDV important for left heart failure?

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Q: What are the three populations of cells in the heart that can act as pacemakers? How do they differ?

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Q: What is the principal pacemaker?

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Q: Explain why the SA node normally paces the heart.

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Q: Can you explain the full cardiac cycle?

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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: Explain the pathway of the conductions system in the Heart?don't copy from google

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Q: Provide the alternative terms for the contraction and relaxation of heart chambers.

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Q: Explain when and how the two sounds of heart are produced?

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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: What happens when there is an abnormality of the heart’s intrinsic electrical conduction system?

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Q: What are the pathways of conduction through the heart?

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Q: What is the role of one-way valves in the return of blood to the heart?

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Q: Define the term Myocardial contractility?

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

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Q: What is an electrical difference across the fibers of the heart called?

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