Explain the Frank-Starling law of the heart

Q: Explain why an incompetent valve reduces the efficiencyof the heart contraction.

A: The organ of the mesodermal origin-the heart is primarily accountable for blood pumping. Repeated…

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

A: Human heart is situated in the space of thoracic cavity present between two lungs.

Q: Given heart rate = 72 bpm, stroke volume = 70 mL, calculate cardiac output.

A: Stroke volume: All the blood from body enters into right atrium from where it is pumped into right…

Q: In testing the effects of different ions on heart action, why were chlorides used in each case?

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: Discuss the regulation of cardiac output during exercise.

A: The cells are the primary unit of life. The cells form the tissues which collectively form an organ.…

Q: What causes heart murmers in diastole and in systole

A: Diastole:It is the phase of the heartbeat when the heart muscle relaxes and allows the chambers to…

Q: Explain two reasons why the heart is referred to as a double pump.

A: The circulatory system consists of the heart, the blood vessels and the blood. The heart is the…

Q: Describe the pressure changes in the atria and ventriclesduring a cardiac cycle.

A: The heart is an organ found in animals which is specialised to pump blood in the body. The heart is…

Q: Define cardiac output, describe how it is regulated, and identify factors that affect it.

A: Cardiac muscle tissue can be defined as one of the three types of muscle tissue in our body. Cardiac…

Q: Describe the pacemaker potential and the myocardial action potential, and explain how the latter…

A: Heart is the major pumping organ in our circulatory system. It has two types of cells namely;…

Q: Which of the following is the mean cardiac output (in L/min) needed to sustain oxygen delivery to…

A: Normal cardiac output is the result of heart rate and stroke volume which is measured in litres per…

Q: 24.5. Describe using diagrams as appropriate the cardiac cycle.

A: Circulatory system is crucial for normal functioning of body tissues and  vital organs for survival…

Q: Describe the effects of sympathetic and parasympathetic neuronal stimulation on heart rate.

A: the effects of sympathetic and parasympathetic neuronal stimulation on heart rate are:

Q: Describe the Flank-Starling law in the heart.

A:

Q: Describe the mechanisms that increase the cardiac output during exercise and that increase the rate…

A: When a person is exercising there are various circulatory changes that occur in his/her body. The…

Q: List the normal value for resting heart rate

A: The human circulatory system or the blood vascular system consists of a muscular chambered heart, a…

Q: What factors increaase the force of contraction of the heart and what factors decrease the force of…

A: Heart is one of the vital organs of a human body. It is responsible for pumping blood through the…

Q: Describe the anatomy of movement of the wave of cell depolarization throughout the heart during the…

A: The cardiac cycle:It is comprised of a whole relaxation and contraction of both the atrium and…

Q: Write the formula relating to heart rate

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

Q: They carry oxeganated blood away from the heart,while capillaries?

A: Blood vessels referred to as the tubular channels from which blood get transported all over the…

Q: Discuss the mechanism underlying AP generation by cardiac autorhythmic cells

A: Simply put, a cardiac arrhythmia is an abnormal heart rate and/or rhythm that is not biologically…

Q: Why is the Frank-Starling law of the heart important to the understanding of heart failure?

A: Frank starling law is a law that defines the relation between end diastolic volume and stroke…

Q: Number of double circulations completed by the human heart per minute under resting conditions is

A: Components of closed circulatory system It consists of heart to pump the blood, blood vessels like’s…

Q: Explain the pathway of the conductions system in the Heart

A: The heart is a muscular organ consisting of four chambers. It consists of two upper chambers known…

Q: In two to three paragraph, Discuss the importance of atresia.

A: Atresia is a condition in the body in which any type of passage in the body is blocked. Atresia can…

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: Explain why it is more efficient for contraction of the ventricles to beginat the apex of the heart…

A: To answer this question we should have knowledge of Physiology.

Q: What is autorhythmicity? Describe how nodal cells function as autorhythmic cells to serve as the…

A: The cells associated with the function of creating the rhythmic impulses in order to set the pace…

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

A: The cardiovascular system of the humans consists of organs like heart and blood vessels. The primary…

Q: Describe what happens to the chambers of the heart during diastole

A: Heart consists of four chambers to ventricles and two Atria. Diastole and systole are two phases of…

Q: Explain the design, function and disadvantage of the three types of oxygenators used in the…

A: Oxygenator: The oxygenator is a medical device, designed to transfer oxygen to infused blood and…

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

A: The human heart is the one organ that powers the entire body. Without it we wouldn’t be able to do…

Q: Atrial fibrillation can be caused by wandering re-entrant circuits.  What does this mean?

A: Introduction Any valve in the heart can be damaged or diseased, resulting in valvular heart disease.…

Q: How can an individual’s maximum heart rate be estimated explain with a formula?

A: Heart rate is defined as the number of heartbeats per minute. A normal resting heart rate for adults…

Q: Name the blood vessels that supplies the walls of the heart with oxygen.

A: The heart consists of four chambers namely, right atrium, left atrium, left ventricle, and right…

Q: Calculate heart rate by counting the number of Large ecG Squares

A: The number of times a heart beats in a unit of time is called heart rate. Usually, it is measured as…

Q: Describe the functional differences in the effects of the sympathetic and parasympathetic divisions…

A: The nervous system is an organ system in the body that can be divided into the central nervous…

Q: Why must this change occur? (in reference to how does the heart rate differ before and after…

A: The process of circulation or internal transport is carried out by the pumping organ of the body,…

Q: Describe the spread of the action potential through the heart’s conduction system.

A: A transient shift in voltage (membrane potential) across the cell membrane of heart cells is…

Q: Explain the mechanism of the contractions of the heart and how it is regulated?

A: The heart is a muscular organ that is divided into four chambers: Left auricle (LA), right auricle…

Q: Describe the mechanism of action of cardiac glycosides, such as digitalis.

A: Cardiac glycosides drugs example are digoxin and digitoxin.  These drugs are used in the treatment…