The auricle refers to the small, muscular pouch-like structure located on the superior surface of each atrium. It is commonly known as the atrial appendage or atrial auricle. The auricles help to increase the capacity of the atria, allowing them to accommodate a larger volume of blood. They play a role in the efficient filling of the ventricles during the cardiac cycle.

What is "auricle"?

auricle

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A valve refers to a structure that regulates the flow of fluids or substances within various systems. In particular, valves in the cardiovascular system play a crucial role in directing the flow of blood. These valves, such as the atrioventricular (AV) valves and semilunar valves, ensure that blood flows in the desired direction and prevents backflow. Valves also exist in other parts of the body, such as the digestive system, where they control the passage of food and waste materials. Overall, valves act as important gatekeepers, maintaining the proper flow and function of fluids and substances within the body.

What is a "valve "?

valve

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The right atrium is one of the four chambers of the human heart, located on the right side. It receives deoxygenated blood from the body through the superior and inferior vena cava and then contracts to pump the blood into the right ventricle for further circulation. It plays a crucial role in the cardiovascular system by facilitating the flow of blood and ensuring efficient oxygenation throughout the body.

What is "right atrium"?

right atrium

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The right ventricle is a chamber of the human heart located on the right side. It receives deoxygenated blood from the right atrium and contracts to pump the blood into the pulmonary artery, which carries it to the lungs for oxygenation. The right ventricle has thicker muscular walls compared to the atria and is responsible for propelling the blood to the lungs. It plays a vital role in the circulation of blood, ensuring that oxygen-depleted blood is efficiently transported to the lungs for oxygenation before it is returned to the left side of the heart.

What is "right ventricle"?

right ventricle

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The ventricle is a muscular chamber responsible for pumping blood to the rest of the body. It plays a vital role in the circulatory system by receiving blood from the atrium and then contracting to propel it forward into the arteries. The ventricle's muscular walls are thicker and stronger than the atria, enabling it to generate the force needed to push oxygenated blood to the body's organs and tissues. In the heart, there are two ventricles: the left ventricle, which pumps oxygenated blood to the systemic circulation, and the right ventricle, which pumps deoxygenated blood to the lungs for oxygenation. The coordinated contractions of the ventricles ensure the continuous flow of blood throughout the body, sustaining vital functions and maintaining overall cardiovascular health.

What is "ventricle"?

ventricle

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The left atrium is one of the four chambers of the heart that receives oxygen-rich blood from the pulmonary veins and contracts to push the blood into the left ventricle for subsequent circulation throughout the body. It plays a vital role in systemic circulation and is essential for maintaining blood flow and oxygenation to the body's tissues and organs.

What is "left atrium"?

left atrium

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The left ventricle is the largest and strongest chamber of the heart responsible for pumping oxygen-rich blood to the rest of the body. It receives blood from the left atrium and contracts forcefully to propel the blood into the aorta, which then distributes it to all organs and tissues. The left ventricle's thick muscular walls allow it to generate high pressure and maintain systemic circulation, supplying oxygen and nutrients to support the body's metabolic needs.

What is "left ventricle"?

left ventricle

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The tricuspid valve is one of the four valves in the human heart, specifically located between the right atrium and right ventricle. It is named after its three leaflets, or cusps, which open and close to control the blood flow. When the right atrium contracts, the tricuspid valve opens, allowing blood to flow into the right ventricle. When the ventricle contracts, the valve closes to prevent the backflow of blood into the atrium. This helps maintain the proper direction of blood flow and ensures efficient pumping of oxygen-depleted blood to the lungs for oxygenation.

What is "tricuspid valve"?

tricuspid valve

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The pulmonary valve is a one-way valve in the heart that allows blood to flow from the right ventricle to the pulmonary artery. It opens when the right ventricle contracts, allowing deoxygenated blood to be pumped to the lungs for oxygenation. After oxygenation, the pulmonary valve closes to prevent blood from flowing back into the right ventricle, ensuring proper blood flow through the circulatory system.

What is "pulmonary valve"?

pulmonary valve

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The mitral valve, also known as the bicuspid valve, is a heart valve located between the left atrium and the left ventricle. It consists of two leaflets that open and close to regulate blood flow. When the left atrium contracts, the mitral valve opens, allowing oxygenated blood to flow from the atrium into the ventricle. It then closes tightly when the left ventricle contracts to prevent blood from flowing back into the atrium, ensuring efficient circulation of blood throughout the body.

What is "mitral valve"?

mitral valve

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The aortic valve is located between the left ventricle and the aorta, and it consists of three cusps or leaflets. When the left ventricle contracts, the aortic valve opens, allowing oxygenated blood to be pumped into the aorta. Once the ventricle relaxes, the aortic valve closes to prevent the backflow of blood into the ventricle. This closure creates a one-way flow of blood, ensuring proper circulation and distribution of oxygenated blood to the body's tissues and organs. The aortic valve plays a crucial role in maintaining the efficiency and integrity of the cardiovascular system.

What is "aortic valve"?

aortic valve

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The epicardium, also known as the visceral layer of the serous pericardium, is the outermost layer of the heart. It is composed of connective tissue and adipose (fat) tissue. The epicardium helps to protect and lubricate the heart, allowing it to contract and relax smoothly within the pericardial cavity. It also plays a role in the blood supply to the heart by housing small blood vessels that nourish the heart muscle.

What is "epicardium"?

epicardium

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The myocardium is the muscular tissue that forms the middle layer of the heart wall. It consists of specialized cardiac muscle cells that contract rhythmically to pump blood throughout the body. The myocardium is thicker in the left ventricle, which pumps oxygenated blood to the systemic circulation, compared to the right ventricle, which pumps deoxygenated blood to the lungs. Its intricate structure and contractile properties enable the heart to efficiently circulate blood and maintain overall cardiovascular function.

What is "myocardium"?

myocardium

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The endocardium is a thin layer of tissue that lines the interior of the heart, including the chambers and valves. It is composed of endothelial cells and connective tissue, providing a protective and smooth surface for efficient blood flow. The endocardium also contributes to the regulation of cardiac function by participating in the conduction of electrical impulses and aiding in the prevention of infections and clot formation within the heart.

What is "endocardium"?

endocardium

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The apex refers to the pointed, lowermost part of the heart, located at the tip of the left ventricle. It is situated slightly to the left of the midline and rests against the diaphragm. The apex is an important landmark used to determine the precise location of the heart during physical examination and imaging studies. It is also where the heartbeat can be most easily felt or heard through a stethoscope, as the apex moves against the chest wall during each contraction of the heart.

What is "apex"?

apex

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septum

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Here you will learn some English words related to the heart, such as "valve", "ventricle", and "auricle".

Mots Anglais pour "Le Cœur"