Sketch and discuss the most important waveforms associated to the cardiac cycle and what is the relationship between the mechanical, electrical and acoustic events

Q: Estimate the ejection fraction of the failing heart at a typical normal end-diastolic volume?

A: Ejection fraction estimation - It is the measurement of the amount of blood pump from left ventricle…

Q: Match each function to the correct cardiac valve. Prevents backflow of blood into the left atrium.…

A: Heart pumps blood to the body. Heart of mammals and birds has four chambers, 2 atria and 2…

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: What two values are needed in order to calculate cardiac output (CO) for a ventricle? a.…

A: Answer is c.)  stroke volume (SV) and heart rate (HR) .

Q: Explain the electrical and mechanical events in the cardiac cycle, including their relationship to…

A: The sequence of events performed by the heart from one heartbeat to the commencement of next is…

Q: Based on your data, how was your heart rate different during the first and last 10 seconds…

A: Heart rate is the pounding of the heart in one minute. Normal heart rate is -60 to 100beats /…

Q: Describe how and why cardiac anatomy changes at birth?

A: The cardiovascular system comprises the heart, which is the anatomical pump with its internal parts…

Q: Describe and analyze the portions of an EKG. Describe the effects on the different chambers of the…

A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…

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: The endocardium of the heart is composed of THREE layers. Describe their structure and also explain…

A: The main organ of the circulatory system is the heart. It has four-chamber that is responsible for…

Q: What is Preload and Afterload in the cardiac output of a human heart?

A: Preload is the initial stretching of the cardiac myocytes (muscle cells) prior to contraction. It is…

Q: Explain how Cardiac output is controlled and affected by the following factors: 1. the atrial and…

A: Atrial reflexes is in action when there is venous return to the heart. Baroreceptors in the superior…

Q: In a single cardiac cycle, if EDV increases, what do you predict about the upcoming SV? Will SV…

A: In a single cardiac cycle, if EDV the upcoming SV will also increase.  EDV is directly proportional…

Q: Describe the pathway of electrical conduction of the heart, starting with the SA node. How does…

A: In the heart, the contraction of the heart muscle is promoted by the electrical conduction system…

Q: In the figure below on the left, label the P, QRS and T waves. Describe what is happening in the…

A: The electrical activities of heart are traced with the help of electrocardiogram. Under normal…

Q: Describe the causes of the P, QRS, and T waves of an ECG, and indicate at which point in the cardiac…

A: The cardiac cycle represents the event that occurs after the ending of one heartbeat to the start of…

Q: Define each of the following external features of the heart: auricle, coronary sulcus, anterior…

A: The heart is an organ that pumps blood through the arteries. The pumped blood carries oxygen…

Q: Which of the following correctly ranks pressures during isovolumetric contraction of a normal…

A: A normal cardiac cycle is characterised by revenant atrial and cavity contractions and…

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: 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: a)How is one-way flow through the heart achieved and What are the stages of the cardiac cycle and…

A: The cardiac cycle is a function of the human heart from the beginning of the heartbeat to the…

Q: Define end-diastolic volume, end-systolic volume, and stroke volume. How are they related?

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

Q: Explain Mechanical Events of the Cardiac Cycle?

A: The cardiac cycle involves the events that occur in the heart chambers in a single heartbeat. The…

Q: What is mainly responsible for the delay between the atrial and ventricularcontractions?

A: The action potential conduction velocity of the AV node cells is mainly responsible for the delay…

Q: John black is a 58 year old mechanic that has prosthetic heart valves and is on warfarin. He is…

A: Antibiotics use to kill the bacteria and inhibit their growth. Antibiotic prophylaxis is the…

Q: When during the cardiac cycle do ventricles contain their maximal amount of blood? At the end of…

A: Cardiac cycle is referred to as the time period between the contraction of atria and the relaxation…

Q: Create a flow diagram for this cardiovascular system that has these elements in correct order • Vena…

A: Introduction  The circulatory system (cardiovascular system) transports oxygen-rich blood from the…

Q: Which of the following is/are true concerning the opening and closing              of the  cardiac…

A: Cardiac valves present in the heart regulate the flow of blood from one chamber of the heart to the…

Q: Can you please explain in detail :  is the ventricular afterload a determinant of cardiac…

A: Cardiac Output- This is the process in which blood volume used to ejected by the heart/ unit time.…

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: In the cardiac cycle, the occurrence of S, is most likely indicated at which of the following…

A: A test to assess the heart's electrical functioning is called an electrocardiogram, or ECG.  The…

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: 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: 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: 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: During heart development, the primary outcome of cardiac looping is Fusion of the aortic sac vessels…

A: Heart development occur in various stages.

Q: Define the terms systole and diastole. Distinguish atrial and ventric-ular systole and diastole

A: A mammalian heart contains four chambers. They include the right and left atria and the right and…

Q: What is cardiovascular mechanics and why is it relevant ?

A: Circulatory system plays the very important role of delivering nutrients and oxygen to the cell and…

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: Define a cardiac cycle and the cardiac output.

A: Cardiac system or in clinical terms , the cardiovascular system is defined by the entire organ…

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

A: INTRODUCTION The cardiac cycle is the activity of the human heart from the start of one heartbeat to…

Q: Pressure changes that occur during the cardiac cycle are responsible for what two physiologic…

A: The cardiac cycle is the time interval between atria contraction and ventricular relaxation. Fluids,…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.