which of the following is the pacemaker of the heart?

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: What are the risk factors and clinical manifestations for right-sided heart failure?

A: Heart failure is a life-threatening, long-term medical condition characterized by the inability of…

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

A: Diastole and systole are the two phases of the cardiac cycle. They occur as the heart beats and…

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 causes heart murmurs in systole?

A: Systolic heart murmurs are heart murmurs detected throughout systole, i.e. they start and finish…

Q: Describe the four specific properties of cardiac cells of the heart?

A: The heart comprises generally of cardiovascular muscle cells (or myocardium). The remarkable…

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: Identify the four valves of the heart?

A: Step 1 The human heart is hollow, a fibromuscular conical pyramidal mesodermal organ that lies…

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 do you think are the clinical symptoms indicating that a person requires the surgical…

A: Answer- Mechanical pacemaker is a small device that is used to send electrical symptoms to the…

Q: Which side of the heart—right or left—do bacteria in infected lymph reach first? Where do they go…

A: Lymph is considered as the fluid, which travels to the lymphatic vessels. The lymphatic system plays…

Q: What are the layers of the heart (in order) that a scalpel would pass through during dissection?…

A: The scalpel initially passes the fibrous pericardium and the next comes the parietal layer of the…

Q: what is the function of the many coverings of the heart and the three layers of the heart itself?

A: The heart is a hollow muscular organ which is involved in pumping the blood through the circulatory…

Q: What are the main factors that control heart rate?

A: Introduction:Carotid arteries carry blood from the heart to the brain. They branch off from the…

Q: Which vessels supply blood to the myocardium?

A: The heart of the human has four chambers. These four chambers are the Left and Right atrium, Left…

Q: What causes an increase in heart rate?

A: Heart rate/Heart pulse It is the speed of the heart beat measured by the number of pounding of the…

Q: What does the heart release?

A: the heart is the main organ of the circulatory system that pumps throughout to maintain the flow of…

Q: Why is the left side of the heart larger than the right?

A: The right side of the heart is designed to pump the blood into the lungs and then to receive oxygen.…

Q: What are the uses of cardiac troponins?

A: Troponins are a group of protein molecules that are found in skeletal and cardiac muscles. The…

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: Why are the tendinous cords required for the proper functioning of the AV valves?

A: The heart is a muscular organ of the cardiovascular system that functions to pump the blood to the…

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: Which layer is both a part of the pericardium and a part of the heart wall?

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

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: What is the typical resting heart rate?

A: Resting heart rate can be defined as the number of times the heart beats per minute (bpm) while at…

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: Define the term - vena cava ?

A: Answer- Humans have closed type of circulatory system and it comprises of arteries and veins to…

Q: Define the term pericardium?

A: Heart is the vital organ of the body that help to transit oxygen and energy throughout the body

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 is the principal pacemaker?

A: In its most basic form, biotechnology is simply science based on biology; it uses cellular and…

Q: which of the following groups is most related to the pumping function of the heart? Explain the…

A: The heart is a muscular organ the size of a fist that is found directly behind and considerably to…

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: 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 role of one-way valves in the return of blood to the heart?

A: Most of our blood volume is carried in the veins. Veins are blood vessels that carry blood back from…

Q: What is Cardiac Pacemaker?

A: The heart and blood vessels are the main organs of the cardiovascular system. The heart, which is…

Q: What causes the "lub" sound in the cardiac cycle?

A: A lub (also known as S1) and a dub (S2) are the two sounds of the normal cardiac cycle. There may be…

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…

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.