explain the process of Ca2+ induced Ca2+ release in the myocardium. how does this process differ from excitation-contraction coupling in skeletal muscles

Q: Which of the following is unique to cardiac musclecells?a. Only cardiac muscle contains a…

A: The cardiac muscles show the characteristics of both smooth and striated muscles. The cells of…

Q: What roles does Ca2+ play in the myocardium ?

A: Calcium is usually found in a variety of foods, including fishes, some vegetables, dairy products…

Q: Describe the process of Excitation–contraction coupling in cardiac muscle?

A: Excitation contraction is a process through which an action potential (electric stimulus) from the…

Q: Briefly describe and explain how two cardiovascular diseases can be caused by atrial fibrillation.

A: Irregular puls of heart is one of the serious  causes of cardiovascular disease. Many cardiovescular…

Q: 'Which of the following ions is not directly involved in the myocardiocyte action potential? copper…

A: The myocardiocyte action potenital is found in the heart cells.

Q: A chemical called EDTA, like citrate, binds to (or “chelates”) Ca2+. Suppose a person had EDTA…

A: Blood circulates under pressure through the vasculature. Following vascular injury, escaping blood…

Q: Ventricular Contractility increases in response to circulating Epinephrine.  What factor is…

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

Q: During the Cardiac Contraction cycCle, EARLY ventricular systole is characterised by

A: ventricular systole- It is a phase of cardiac cycle in this the left and right ventricles contract…

Q: what is contraction in cardiac muscle cells in response to

A: Muscle cells are the cells also known as myocytes that help in the formation of muscle tissues. The…

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: Describe the functional significance of the skeletal muscle pump and illustrate the action ofvenous…

A: Blood is a type of connective tissue that helps in circulating oxygen and nutrient throughout the…

Q: What major movements of ions account for each phase of the action potential of a typical myocardial…

A: Action potential  The rapid rise in the voltage of the membrane potential across the cellular…

Q: Discuss how the SA and AV nodes control the contractionsof the heart muscle, as well as how these…

A: A network of specialized muscle cells is present in the walls of the heart. These muscle cells are…

Q: Explain differences between action potentials of cardiac muscle cells and those in nodal cells of…

A: On the surface of the heart, muscle fibers are arranged to form a fused interconnected mass termed a…

Q: Imagine that you are feeling very anxious as you walk to the podium to deliver a speech. If your…

A: Ans: Cardiac output: The cardiac out put is the amount of blood pumped by heart to different organs…

Q: Describe the process of Contraction Coupling in the Cardiac Muscle?

A: Answer: Introduction: Cardiac muscle, comprised of the contractile cells of the heart, contain a…

Q: Explain the effect on blood flow of mitral valveincompetence.

A: The heart is a muscular organ that pumps blood to the body and is considered the most important…

Q: Define circulatory shock. What are some of the causes of low venous return shock?

A: The lack of blood affects the organs and cells of the body. This is because they do not receive 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: Which determinant of resistance is varied physiologically to alterblood flow?

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

Q: Describe the arrangement of cardiac muscle fibers.

A: BASIC INFORMATION MUSCLE It is a type of soft tissue which are found in most of the animals. The…

Q: Which ONE of the following statements is TRUE? OA Cardiac myocyte contraction results primarily from…

A: Given here are some statements . Following I will be discussing which among them is correct and…

Q: Acclimatization at high altitude would include a.increased in contractility of heart and increased…

A: Acclimatization, also known as acclimation or acclimatisation, is the process by which an individual…

Q: Explain the physiologic significance of the syncytiotrophoblast’s production of hCG.

A: During sexual intercourse, the sperm enters the vaginal canal and begins to swim toward the egg. 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: A patient is admitted to the emergency room of a hospital complaining of chest pain and shortness of…

A: Myocardial infarction: It is also known as a heart attack. When a sufficient amount of blood does…

Q: Explain the intercellular structures of cardiac muscle.

A: Heart is a muscular organ that pumps blood throughout the circulatory system. It is situated between…

Q: Repolarization of ventricular myocardiocytes is caused by ______ the cells through voltage-gated…

A: Repolarisation is caused by the movement of positively charged k+ ions out of the cell. it initially…

Q: Where is the mitral valve located? Describe the directionand type of blood (oxygenated or…

A: The valve of the heart is composed of the endocardium and connective tissue. Valve are structures…

Q: Compare and contrast the action potential of a myocardial conductive cell and the action potential…

A: Myocardial conductive cell: [action potential] The conductive cells within the heart establish the…

Q: Explain the Frank-Starling law of the heart

A: The heart receives the blood through atrial chambers and it pumps down to the ventricles and thereby…

Q: Draw and label channel of events of the myocardial action potential with correct axis and units.…

A: The cardiac action potential is a slight change in membrane potential experienced by the cells of…

Q: Explain the concept of tetany in skeletal muscle. Can cardiac muscle be tetanized? Explain the…

A: Tetanus is a condition of  involuntary contraction of skeletal muscles with increased frequency of…

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: Describe the action of the tricuspid valve when you squeezed the water-filled right ventricle.

A: The heart is a muscular pumping organ that passes deoxygenated blood to the pulmonary organ and…

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: Predict the pressure changes that occur in the aorta, the left ventricle,and the left atrium after…

A: The heart is a smooth muscle organ that plays a major role in the circulation of blood. Human heart…

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: Would a ventricular septal defect cause: Choose one. Pulmonary edema due to vasoconstriction…

A: Ventricular septal defect is a heart defect because of hole in the wall between the heat lower…

Q: Differentiate heart blocks from PVCs with regardto causes and effects on heart action.

A: Additional cardiac contractions generated by an ectopic center of irritability outside the…

Q: Give two reasons why the Purkinje fibres are faintly stained compared with ordinary cardiomyocytes

A: Purkinje fibres are excitable cells or fibres present in the inner ventricle wall of heart. They are…

Q: What is the function of the pulmonary circulation

A: NOTE: AS PER OUR GUIDELINES WE ARE ONLY ALLOWED TO ANSWER THE FIRST QUESTION. PLEASE RESUBMIT THE…

Q: Is Atrial Fibrillation a lethal rhythm

A: A human heart have four chambers: upper two atrium and lower two ventricles. All the four chamber…

Q: Fill in the blank:  The fibers that carry cardiac impulses from the interventricular septum into the…

A: Cardiac impulses originate from the sinoatrial node that causes the contraction of the heart muscles…

Q: Knowing that a patient with chronic heart failure is using digoxin (digitalis) for more than 1 year,…

A: Digoxin is a medication that is commonly used to treat a variety of different heart conditions, such…

Q: Which of the following are TRUE, when describing the Action Potential of a Non- Contractile Cardiac…

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

Q: how the two types of pumps used in the cardiopulmonary bypass work

A: Cardiopulmonary bypass contains two main elements such as the pump and the oxygenator that eliminate…

Q: In which direction does Ca2+ move in response to the opening of voltage-gated Ca2+ channels: into or…

A: Voltage-gated ion channels are a type of transmembrane protein that forms ion channels that are…