describe cardiac pacemaker cells then give two functions of the cardiac pacemaker cells.

Q: Blood flow to the skeletal muscles increases with exercise. Explain how the autonomic nervous system…

A: The functioning of every tissue requires energy which is provided by the generating metabolic energy…

Q: Give typing answer with explanation and conclusion there are many patients who have atrial…

A: Atrial fibrillation occurs in different patterns. This may cause stroke, heart failure, and other…

Q: Should epinephrine or acetylcholine alter the rate of contraction of separated pieces of cardiac…

A: Neuotransmitters include epinephrine and acetylcholine. They work on beta and muscaric receptors,…

Q: Explain, using diagrams where appropriate, the sequence of events in a cardiac cycle

A: Introduction  The organ that pumps blood throughout our bodies is the heart, which is around the…

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: Unlike skeletal and smooth muscle tissue, cardiac muscle is “self-excitable”. Explain how this…

A: There are three major types of muscles. They are skeletal muscles, smooth muscles, and cardiac…

Q: Compare and contrast pressure and volume changes of the left ?and right ventricles and the aorta…

A: Answer: Introduction: The heart is present in the thoracic (Thorax) cavity medially among the lungs…

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: a patients blood test showed high levels of myocardium-specific troponin, and her ECG showed ST…

A: ST elevation means that ST segment in ECG is abnormally high above the baseline. ST segment…

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 factors reflect the oxygen demands of the myocardium?     heart rate multiplied by…

A: Myocardial oxygen demand can be defined as the amount of oxygen that is required by the heart to…

Q: A decrease in the effective circulating blood volume occurs in the circulatory system when moving…

A: The cardiovascular system is an organ system which distributes blood to all the parts of the body…

Q: Describe the path a red blood cell would take once it passed through the aortic semilunar valve and…

A: Carotid arteries are the arteries that supply oxygen-rich blood in the neck and head region.  They…

Q: Predict the consequences for the heart’s pumping effectiveness ifnumerous ectopic foci in the…

A: Ectopic foci are abnormal pacemaker sites outside the sinoatrial node.

Q: Predict the significance of slow blood flow in the capillaries

A: The blood vessels are characterized by the presence of a single endothelial layer, diameter 5 to 10…

Q: A. What could be the implicatiosn for the atrial and ventricular contraction-relaxation? B. Draw…

A: If the pacemaker activity in the atrioventricular (AV) node overtakes the sinus node (SA node)…

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: Explain why Purkinje fibers conduct action potentials morerapidly than other cardiac muscle cells

A: Purkinje fibers are components of the heart's advanced conduction system, which guarantees that an…

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: Describe the cardiac cycle

A: The cardiac cycle refers to all the events or steps that occur from the beginning of one heartbeat…

Q: Describe one cardiac cycle,beginning with both atria and ventricle relaxed?

A: The cardiac cycle is referred to as one heartbeat that consists of one cycle of contraction and…

Q: Describe a situation in which you can readily see the capillary beds opening and closing and give…

A: In the aorta, the blood travels at 30 cm/sec. As blood moves into the arteries, arterioles, and…

Q: define cardiac cycle

A: The cardiac cycle is the process of contraction and relaxation of the heart. The primary function of…

Q: During the systolic phase of the cardiac cycle, the heart is

A: The cardiovascular system, also referred to as the circulatory system or the system, is an organ…

Q: Study the diagram below to identify the pressure relationships which are present during VENTRICULAR…

A: During first part of ejection ventricular pressure rises blood is intensively ejected to the…

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: Describe one cardiac cycle, beginning with both atriaand ventricles relaxed

A: Animal physiology is the systematic study of the supporting features, roles, and processes of…

Q: Calculate changes in length of cardiac cycle with exercise and discuss their significance

A: The cardiovascular or the circulatory system transports gases, nutrients, hormones and metabolic…

Q: Detail action potential of myocardial conduction and contractile cells – see stages. Include all ion…

A: An action potential is characterized as a drastic shift of the resting membrane potential that is…

Q: Discuss why the heart is called a double pump and compare the pulmonary and systemic circuits.

A: The human heart lies in the protective thorax, posterior to the sternum and coastal cartilage, and…

Q: Describe what happens with the blood flow if each valve stop working. For example, first describe…

A: The circulatory system of the human body circulates the blood across the body. The heart is the…

Q: Explain the differences in structure and function of the two types of heart valves

A: The cardiovascular system is also called the blood vascular or circulatory system, consists of a…

Q: 2. It is desired to examine the kinetic properties of voltage-dependent potassium channels in a…

A: The voltage-dependent inhibition refers to the ability of the potassium channels to close or reduce…

Q: ____ is the contractile phase of the cardiac cycle and _____ is the relaxation phase of the cardiac…

A: The pumping of blood in the body is a function performed by heart. Now, the pressure with which the…

Q: interpret premature ventricular contractions from ECG with graph?

A: An ECG (electrocardiogram) is a record of the electrical changes occurring in the heart muscles…

Q: Explain what is the relationship between flow rate, the difference in blood pressure between the two…

A: As we know, the higher the pressing factor applied by the heart, the quicker blood will stream.…

Q: Cardiac pacemaker cells fire an action potential similar to neurons. The influx of what ion is…

A: The cardiac muscles have the capability to generate electrical impulses that are responsible for…