Describe the anatomy of movement of the wave of cell depolarization throughout the heart during the cardiac cycle.

Q: Describe how the pressure in the left ventricle and in the systemic arteries varies during the…

A: The heart is a muscular organ that is divided into the left and right sides to prevent the mixing of…

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: Describe the spread of excitation from the SA node through the restof the heart?

A: In the mammalian heart, the heartbeat originated from the cardiac muscles. The heartbeat originated…

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: 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: 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 the structural and functional characteristics of cardiac muscle tissue and the cardiac…

A: the structural and functional characteristics of cardiac muscle tissue:

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: Summarize the effects of the autonomic nervous system on the heart.

A: The functioning of heart is controlled by Autonomic nervous system in many ways

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: summarize the phases of the cardiac cycle.

A: Introduction The cardiac cycle is defined as the sequential event in the heart which is cyclically…

Q: Explain the events in the cardiac cycle. Describe 'double circulation'.

A: Introduction: The heart is a muscular organ in most animals, which pumps blood through the blood…

Q: Relate the timing of heart sounds to the ECG waves and pressure changes during systole and diastole.

A: ECG stands for Electrocardiogram. It is the graphical representation of the conduction system and…

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

A: the effects of sympathetic and parasympathetic neuronal stimulation on heart rate 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: Describe the factors that influence preload and afterload, and explain how they affect cardiac…

A: Cardiac output is  defined as a amount of blood  heart pumps in a  minute, and also  it depends on…

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 events in a cardiac cycle.

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

Q: Describe the properties of the cardiac muscle, including automaticity, excitability, conductivity,…

A: Cardiac muscle or heart muscle is also known as myocardium. It is one of the three kinds of…

Q: Describe the events that occur during one cardiac cycle.

A: The cardiac cycle is a process that occurs in the heart. The process refers to the event that takes…

Q: Describe the cardiac cycle, and explain why heart valves open in onlyone direction.

A: Human heart is the Center for regulating blood across the body. It is made up of cardiac Muscles…

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: explain the cardiac cycle and how electrical impulses are conducted through the human heart?

A: The heart is a muscular organ and is about the size of a fist. It is located behind the breast bone.…

Q: Describe cardiac output, including the factors involved in its regulation.

A: Our heart can likewise expand its stroke volume by pumping powerfully & expanding the amount of…

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: define cardiac cycle

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

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: Define the term homeostasis. Define the term set point. Explain how a normal range of values for…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: In a cardiac contractile cell what is the mechanism involved in the change in membrane potential?…

A: The cardiac contractile cell undergoes various changes in order to perform several activities and…

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: 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: 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: Draw these five graphs on the same set of axes: atrial autorhythmic cell action potential atrial…

A: Cardiac muscle action potential- During the action potential there is passing of electrical signals…

Q: Describe the control of cardiac function by the autonomic nerves

A: ANS ( Autonomic Nervous system ) is responsible for controlling many physiological functions…

Q: Occasionally an ectopic pacemaker will develop in part of the conducting system of the heart. What…

A: An ectopic pacemaker is a collection of excitable cells located outside of the heart's typically…

Q: Explain in detail how the blood flows through the heart.

A: Heart is also known as Cardia It is the hollow muscular organ responsible for pumping the blood…

Q: Describe the control of heart rate during and afterexercise.

A: Heart - heart is a body organ which pumps blood through blood vessel to the circulatory system.…

Q: Describe the general overall shape of the left and right cavities of the ventricles as observed in a…

A: The heart is the major organ of the circulatory system that pumps blood to the parts of the body. It…

Q: Describe what occurs in the heart during systole and diastole.

A: The heart is a muscular organ that pumps blood through the blood vessels of the circulatory system.…

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: 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…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.