Regarding the cardiac cycle at resting HR, when in the cycle does ventricular filling occur? How important is atrial contraction to the EDV? Why is the first part of ventricular contraction isovolumetric? When and why does rapid ejection of blood from the ventricle occur?

Q: What effect would have cardiac arrhythmias, such as acute atrial fibrillation on cardiac output and…

A: The complications of heart arrhythmias might incorporate stroke, unexpected death, and…

Q: during a procedure, a patient's end diastolic volume was found to be 127mL. The end systolic volume…

A: In the human circulatory system, the heart is considered the central organ that plays a significant…

Q: Describe the effects of sympathetic neuron stimulation on cardiacmuscle during contraction and…

A: Contraction in cardiac muscle occurs with the help of the sliding filament model of contraction.…

Q: Explain isovolumetric ventricular relaxation?

A: The time between the atrial contraction and ventricular relaxation or between one heartbeat's end to…

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: What is the pacemaker potential due to, and what is its inherent rate?

A: The rhythm of the heart is normally determined by a pacemaker site called the sinoatrial (SA) node…

Q: Discuss the relationship between Ventricular end-diastolic Volume and Stroke Volume?

A: Cardiac output (CO) is the volume of blood pumped by the heart through the systemic circulation. It…

Q: The onset of ventricular systole is characterized by the closing of AV valves and ?

A: The cardiovascular system is a vital division of the body's circulatory system comprised of the…

Q: What is the ejection fraction of the heart, and which amount of ejection friction is considered…

A: Heart is vital circulatory organ found in vertebrates and some of invertebrates. This essential…

Q: Define cardiac output in words and with a simple mathematical formula.

A: The heart is one of the most essential organs of the body. It is essential for the working of every…

Q: What is venous return? Explain how it affects preload.How does preload affect cardiac output? State…

A: An electrocardiogram (ECG or EKG) records the electrical signal from your heart to check for…

Q: Elma, an athlete, has a low resting heart rate of 60 heartbeats per minute. Her resting cardiac…

A: Heart is the principal organ of the cardiovascular system. In addition to the heart it includes the…

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: prthostatic hypotension ha

A: Orthostatic hypotension is a reduction in the blood pressure that is more than 20 mmHg in the…

Q: Why is a high resting BP considered a risk for exercise testing? Based on your knowledge of BP…

A: The force of the blood rushing against the walls of the arteries is known as blood pressure. When…

Q: What is the concept of Cardiac Output Max, Cardiac Output Rest, and Cardiac Output Reserve?

A: The heart, which pumps blood, is a crucial organ. All parts of the body receive oxygen and nutrients…

Q: rest

A:

Q: The maximum amount of blood within the left ventricle just before the start of isovolumic…

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: What are the two functional importances of the intercalated discs of cardiac muscle?

A: The intercalated discs are a specific feature of cardiac muscle fiber where it supports synchronized…

Q: In a cardiac contractile cell what is the mechanism involved in the change in membrane potential?…

A: The cardiac contractile cell undergoes various changes in order to perform several activities and…

Q: What is the relationship between cardiac output and venous return in the steady state?

A: Cardiac output is the amount of blood pumped into the aorta by the heart per minute, and it is…

Q: Describe the cardiac cycle and the relationship amongthe contraction of each of the chambers, the…

A: Cardiac cycle is the process that describes the steps that the human heart does from the start of a…

Q: What is the pacemaker potential due to, and what is its inherent rate?

A: The human heart has four chambers. The human heart is myogenic and does not require a neuronal…

Q: There are a number of drugs that are prescribed to patients with heart failure in an effort to…

A: Inotropic agents are those that modify the force of contraction of the heart. They can be of two…

Q: Describe the conditions at the sarcolemma of cardiac muscle cells at rest.

A: They are connected by intercalated discs. These are striated fibres with a single nuclei. Sarcolemma…

Q: What is the most characteristic feature of a wandering pacemaker rhythm?

A: The Heart is a vital part of the body, it supplies the blood to the various body part, organs. It is…

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: What are the Events in Myocardial action potential? And what do they do?

A: In most animals, the heart is a muscular organ that pumps blood via the circulatory system's blood…

Q: Describe isovolumetric ventriclar contraction in five steps

A: The cycle which includes one round of atrial contraction and ventricular relaxation is referred to…

Q: How does the depolarization of pacemaker cells differfrom the depolarization of other cardiac cells?…

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: How does electricity flow from SA node to the myocardium?

A: A sinoatrial node is a cell grouping known as the heart's natural pacemaker that is present in the…