The marks a spot of dead myocardial cells. How does this change the depolarization and muscle contraction patterns in specific locations of the heart?

Q: Why do we need to prevent the decompensated state in patients with heart failure?

A: Decompensation is any functional decline of a system or structure which was operating earlier with…

Q: A patient has tachycardia. Would you recommend a drug that prolongsor shortens the plateau of…

A: Tachycardia is a condition that makes our heart beat more than 100 times per minute. There are three…

Q: Increased functional demand on the heart produces increased size of the myocardium by: choose the…

A: Cardiac muscle fibers are exclusive to the human heart only. Cardiac muscles show a higher degree of…

Q: A patient is suffering from cardiac arrhythmias. They have atrial fibrillation. Describethe normal…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Which statement about transcription is correct? O RNA polymerase synthesizes DNA from a DNA…

A: Transcription is defined as the process of copying a DNA template to produce an RNA.  Whereas…

Q: Which ion movement causes depolarization in the contractile cells of the heart? Ca++ leaving the…

A: The human heart is a muscular blood pumping organ made up of electrically excitable cardiac muscle…

Q: what does the formation of the strip ventricular canal from the first heart field look like ?

A: During early development, the heart tube is a straight tube that undergoes looping to form the…

Q: Which side(s) of the heart would affected by high pressure in the pulmonary circuit? Which side(s)…

A: BASIC INFORMATION  PULMONARY CIRCUIT the blood pumped by right ventricles enters into the pulmonary…

Q: Compare action potential of pacemaker and non-pacemaker (working) myocardial cells?

A: Cell can be defined as the basic membrane-bound unit which contains the fundamental molecules of…

Q: Define Starling law of the heart

A: The heart is the blood regulating organ of the body. It contains pericardial walls and blood vessels…

Q: The sinoatrial and atrioventricular nodes of the heart are affected by. O only somatic motor nerves…

A: The human heart is an organ that pumps blood through the circulatory system's veins, giving oxygen…

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: Autorhythmic cells in the SA node intrinsically fire at a rate of 90 action potentials per minute.…

A: The heart is a major muscular organ of the cardiovascular system that is responsible for pumping the…

Q: Compare and contrast the molecular events of the action potential in the pacemaker cells of the SA…

A: The action potential is a crucial physiological process that occurs in both pacemaker cells of 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: Contractile cardiac myocytes use calcium influx across the plasma membrane for all of the following…

A: "Since you have posted multiple question we will answer the first question for you. If you want…

Q: The blood pressure through the systém iš highest at the ou as it moves through the system…

A: The heart is the main organ of the cardiovascular system that supplies blood throughout the body. It…

Q: Describe the electrical event in the heart that occurs during each of the following: (a) the QRS…

A: Heart is a muscular organ which is responsible for pumping the fluid connective tissue called blood…

Q: Put the progression of the electrical excitation of the heart muscle in the right order Atrial…

A: Circulatory system is a part of body system which is involved in circulation of body fluids like…

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: Another disease slows the rate of production of cAMP in both contractile and pacemaker cardiac…

A: There are three different kinds of muscle tissues in vertebrates: skeletal muscle, smooth muscle,…

Q: 29. 30. State the significance of the longer action potential in a cardiac CONTRACTILE cell. State…

A: The myocardial contractile cells comprise the mass amount of the cells in the atria and ventricles.…

Q: The following figure models a part of blood vessel network in two different points. If blood vessel…

A: Introduction:- Blood is the body's fluid in the circulatory system of humans and other vertebrates…

Q: visceral pericardium endocardium myocardium parietal pericardium pericardial cavity The heart is…

A: The human heart pumps blood during the frame thru the vessels of the circulatory system, providing…

Q: how two different heart muscle diseases (dilated cardiomyopathy and hypertrophic cardiomyopathy) can…

A:

Q: Starling's law of the heart ?

A: Starling law is commonly known as frank-starling law. Which is related to the heart and its…

Q: What is fibrillation and why can it be life-threatening?

A: Normally the heart muscle contractions occur in a synchronized manner. This synchronization is…

Q: Define the terms depolarization and repolarization with respect to heart’s activity.

A: Cardiovascular action is a short-term change in voltage i.e. the power of the membrane throughout…

Q: Why is the rate of cardiac muscle relaxation faster when a positive inotropic agent is present?

A: Inotropic agents refer to those substances that either increase or decrease the force of contraction…

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: What is the Frank-Starling law of the heart' What is its significance?

A: Venous return is defined as the amount of blood which is formed by the heart every minute and is…

Q: Fibrillation is an asynchronous contraction of cardiac muscle fibers. Is atrial fibrillation or…

A: The heart is a muscular organ the size of a fist found just above and just to the left of the…

Q: raw a ventricular muscle cell action potential in the figure below. Briefly describe the changes in…

A: Similar to skeletal muscle, the resting membrane potential of ventricular cells, is around -90…

Q: Describe why a doctor would give a patient that is diagnosed with acute myocardial infarction the…

A: Myocardial infarction is referred to as tissue death of heart muscle or heart attack it occurs when…

Q: IV 1 2 1 2 2 1 O 2 4 50

A: Inheritance pattern is a pattern which determines how traits are passed from parent generation to…

Q: lar systole begins ventricular relaxation

A: Cardiac cycle : It is the sequence of events that occur from beginning of one heartbeat to the…

Q: In the initial stages of ventricular fibrillation (during which the heart produces no functional…

A: The heart is the pumping organ that is responsible for circulating the blood to different parts of…

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: The cardiac cycle includes all the events associated with the flow of blood through the heart during…

A: An electrocardiogram (ECG) is a recording of the electrical changes that occur in myocardium during…

Q: If all plasma membrane Ca21 channels in contractile cardiac muscle cells were blocked with a drug,…

A: A heart muscle cell is similar to a large house with several doors and rooms. Ion channels are…

Q: Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why…

A: Cardiac muscle or myocardium is the muscle that forms the heart tissue. These are striated and…