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

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: 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 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 drives heart rate?

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

Q: What effect does a bigger heart have on stroke volume and heart beat?

A: Stroke Volume (SV) can be defined as the volume of blood in milliliters that is ejected from each…

Q: Define about Conduction system of the heart.  ?

A: The heart is a muscular organ and is about the size of a fist. It is present behind the left side of…

Q: Which plane divides the heart into anterior and posterior  portions?

A: The heart is a siphon, normally beating around 60 to 100 times each minute. With every heartbeat,…

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 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: 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: 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: From what sources does blood flow into the upper and lower chambers of the heart? What are the…

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

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: Name the neurotransmitter released from parasympathetic nerve endings and what effect does this…

A: Neurotransmitters are body's chemical messengers used by the nervous system to transmit messages…

Q: How do gap junctions and intercalated disks aidcontraction of the heart?

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

Q: What are the three populations of cells in the heart that can act as pacemakers? How do they differ?

A: The heart is a muscular organ and is involved in the pumping of blood via blood vessels. The blood…

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

A: Organ is a group of tissues in a living organism that has a specific purpose or function.  The major…

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: What is the name of the main vessel that moves blood out of the heart?

A: The heart is a huge muscular pump that is divided into two halves, one on the right & one on the…

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: How are the two heart sounds produced during cardiac cycle? Which one of these is of longer…

A: The cycle that involves the end of one heartbeat and initiation of the second heartbeat is called…

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: What are the four chambers of the heart called?

A: KEY WORDS:- Heart - The heart is a organ by which pumps blood to the circulatory system. Pumped…

Q: How can the heart be strong enough to pump blood up your legs against gravity?

A: The heart is incapable of pumping blood back up the veins in your legs and back to your heart on its…

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 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: What is the function of the conduction system of the heart?

A: The heart is a muscular organ responsible for pumping blood and distributing oxygen as well as…

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 is venous heart in Scoliodon?

A: Scoliodon belongs to a genus of sharks of family Carcharinidae. It has elongated and spindle shaped…

Q: What type of cardiac rhythm is this??

A: Electrocardiogram (ECG): This is a simple test. this test can be used to check: -Heart's rhythm…

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 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: What are the major components that make up a human heart?

A: