Why does the heart spend more time in diastole then in systole?

Q: What is the relationship between end-diastolic ventricular volume and stroke volume in a normal…

A: Human heart is the Center for regulating blood across the body. It is located within the thoracic…

Q: Which chambers of the heart have the heaviest musculature?

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: What are the mechanisms that assist in returning venous blood to the heart?

A: The most important transport liquid in the human body is blood. This is circulated from heart to…

Q: What is the cardiac cycle mostly driven by

A: THE CARDIAC CYCLE IS DRIVEN BY THE BLOOD PRESSURE.

Q: Why is it necessary for cells of the cardiac atria and ventricles to contract in a coordinated…

A: Introduction :- Blood from the veins enters the two atria, which have thin walls. The heart's two…

Q: What type of tissue composes the fibrous skeleton of the heart, and how is it organized?

A: The cardiac skeleton, also known as fibrous skeleton of the heart plays four major functions which…

Q: Which structure is present in the right ventricle of the sheep's heart but not in the left…

A: The heart is one of the vital organs in the body. The main function of this organ is to pump up the…

Q: What is ventricular fibrillation?

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

Q: What is the blood flow of the heart?

A: Blood is the body fluid that is composed of plasma and formed cell that circulates through the…

Q: What causes the heart sounds S1 and S2?

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: What is the change in intraventricular pressure between the time the first heart sound begins and…

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: What drives heart rate?

A: The heartbeat is activated by electrical impulses that travel down a special pathway through the…

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: What is the relationship between wall thickness and function among the various chambers of the…

A: Heart in humans have four chambers with different thickness of the walls. Generally the ventricles…

Q: What are the valves called that go from the ventricle to out of the heart?

A: The heart is a hollow, muscular organ primarily of cardiac muscles that functions as a pump to…

Q: List the divisions of the cardiac cycle?

A: In order to pump the blood, a sequence of contractions and relaxing of the atria and ventricles is…

Q: Which region of the heart is innervated by the sympathetic division but not by the parasympathetic…

A: Heart is the vital part of the body that help in the circulation of blood, oxygen and nutrients…

Q: Which of the four chambers of the human heart has the thickest muscular walls?

A: The cardiovascular system consists of the heart, blood, and blood vessels and is also known as the…

Q: What are the principal heart valves, and what is the function of each?

A: Human heart is a organ which is part of circulatory system and is situated in the space of thoracic…

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: Why is there a pause after the atrial contraction andbefore the ventricular contraction?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: What forces drive the venous return to the heart?

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: How are events of the cardiac cycle reflected in pressure and volume changes within the cardiac…

A: The cardiac cycle includes coordinated contraction and relaxation of heart chambers.

Q: What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning…

A: Introduction Significance of atrioventricular node and atrioventricular bundle in the functioning of…

Q: What kind of catabolism occurs in the heart?

A: The heart pumps blood through a system of blood vessels, called the circulatory system. The heart…

Q: Why are the left and right coronary vessels considered the major coronary vessels?

A: The coronary vessels are the blood vessels which are responsible for supplying blood to the heart.

Q: Where are AV valves located within the heart? Where are semilunar valves located within the heart?

A: The heart can be defined as the muscular organ about the size of fist that is situated just behind…

Q: Describe the venous system of the heart?

A: Human heart is the Center for regulating blood across the body. It is located within the thoracic…

Q: Explain when and how the two sounds of heart are produced?

A: The heart is a muscular organ, which pumps blood throughout the body. It is located in the middle…

Q: how does the delay of the impulse at the atrioventricular node contrribute to cardiac function?

A: The AV node serves as an electrical relay station, slowing the electrical current sent by the…

Q: how do gap junction and intercalated disks aids contraction of heart?

A: Cardiac muscle tissues are only limited to the heart. The contractions of the cardiac muscles are…

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: What are the pathways of conduction through the heart?

A: The conduction system in the heart is basically a collection of nodes which can consist of nerve or…

Q: What is the significance of atrio-ventricular node and atrio-ventricular bundlein the functioning of…

A: The heart is the most important organ in the body. It is made up of several different types of…

Q: What are the main components of the venous system in the heart?

A: The venous system is composed of veins. The veins are the part of the vasculature long with…

Q: What is the structure of Heart?

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: What is the significance of the difference in thickness of the ventricular walls?

A: The ventricle is one of the two large chambers towards the bottom of the heart that collects and…

Q: What would happen to the heart rate if some stimulus causes the blood pressure to decrease?

A: Answer given in below step...

Q: What are the basic blood vessels in the heart? Describe briefly the function of each.

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

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: what anatomy examines changes to the heart as a result of heart disease ?

A: The human heart is made up of 4 chambers: 2 Atria and two ventricles. The four chambers help pump…

Q: What is an electrical difference across the fibers of the heart called?

A: Introduction: Even if all of the nerves supplying the heart are cut or if it is divided into several…