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2. teachmeanatomy.info › thorax › organsThe Heart Valves - Tricuspid - Aortic - Mitral - TeachMeAnatomy

   teachmeanatomy.info › thorax › organs

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   Dec 22, 2017 · The valve consists of three cusps – left, right and anterior (named by their position in the foetus before the heart undergoes rotation). Aortic valve – located between the left ventricle and the ascending aorta (aortic orifice).

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3. www.kenhub.com › en › libraryHeart valves anatomy: Tricuspid-aortic-mitral-pulmonary - Kenhub

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   Aug 31, 2023 · The leaflets and cusps that make up the heart valves are made up of layers of connective tissue that are histologically divided into three layers. The semilunar valves are divided into: Ventricularis - which is in direct contact with pulsatile blood and directed toward the ventricles.

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     Valves of the heart (preview) - Human Anatomy | Kenhub

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     Anatomy of the Heart (Layers, Conducting System & Topography)

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5. anatomy.co.uk › heartHeart - Structure, Function, Anatomy, Location, Diagram

   anatomy.co.uk › heart

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   Nov 10, 2024 · Aortic Valve:The aortic valve is located between the left ventricle and the aorta. It has three semilunar cusps and prevents backflow of blood into the left ventricle after contraction. Heart Wall Layers. Epicardium:The epicardium is the outermost layer of the heart and is also considered the visceral layer of the serous pericardium. It is a ...

6. www.visiblebody.com › circulatory-the-heartThe Heart | Circulatory Anatomy - Visible Body

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   • The Heart Wall Is Composed of Three Layers. The muscular wall of the heart has three layers. The outermost layer is the epicardium (or visceral pericardium).
   • The Atria Are the Heart’s Entryways for Blood. The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs.
   • Each Heart Beat Is a Squeeze of Two Chambers Called Ventricles. The ventricles are the two lower chambers of the heart. Blood empties into each ventricle from the atrium above, and then shoots out to where it needs to go.
   • The Valves Are Like Doors to the Chambers of the Heart. Four valves regulate and support the flow of blood through and out of the heart. The blood can only flow one way—like a car that must always be kept in drive.

7. usq.pressbooks.pub › anatomy › chapter6.1 Heart Anatomy – Fundamentals of Anatomy and Physiology

   usq.pressbooks.pub › anatomy › chapter

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   • Location of The Heart
   • Everyday Connection
   • Shape and Size of The Heart
   • Chambers and Circulation Through The Heart
   • Membranes, Surface Features and Layers
   • Membranes
   • Disorders of The Heart: Cardiac Tamponade
   • Surface Features of The Heart
   • Layers
   • Internal Structure of The Heart

   The human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. Figure 6.1.1 shows the position of the heart within the thoracic cavity. Within the mediastinum, the heart is separated from the other mediastinal structures by a tough membrane known as the pericardium, or pericardial sac, and s...

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   CPR The position of the heart in the torso between the vertebrae and sternum (see Figure 6.1.1 for the position of the heart within the thorax) allows for individuals to apply an emergency technique known as cardiopulmonary resuscitation (CPR) if the heart of a patient should stop. In adults, pressure is applied with the flat portion of one hand on...

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   The shape of the heart is similar to a pinecone, rather broad at the superior surface and tapering to the apex (see Figure 6.1.1). A typical heart is approximately the size of your fist: 12 cm (5 in) in length, 8 cm (3.5 in) wide, and 6 cm (2.5 in) in thickness. Given the size difference between most members of the sexes, the weight of a female hea...

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   The human heart consists of four chambers: The left side and the right side each have one atrium and one ventricle. Each of the upper chambers, the right atrium (plural = atria) and the left atrium, acts as a receiving chamber and contracts to push blood into the lower chambers, the right ventricle and the left ventricle. The ventricles serve as th...

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   Our exploration of more in-depth heart structures begins by examining the membrane that surrounds the heart, the prominent surface features of the heart and the layers that form the wall of the heart. Each of these components plays its own unique role in terms of function.

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   The membrane that directly surrounds the heart and defines the pericardial cavity is called the pericardium or pericardial sac. It also surrounds the “roots” of the major vessels, or the areas of closest proximity to the heart. The pericardium, which literally translates as “around the heart,” consists of two distinct sublayers: the sturdy outer fi...

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   If excess fluid builds within the pericardial space, it can lead to a condition called cardiac tamponade, or pericardial tamponade. With each contraction of the heart, more fluid—in most instances, blood—accumulates within the pericardial cavity. In order to fill with blood for the next contraction, the heart must relax. However, the excess fluid i...

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   Inside the pericardium, the surface features of the heart are visible, including the four chambers. There is a superficial leaf-like extension of the atria near the superior surface of the heart, one on each side, called an auricle—a name that means “ear like”—because its shape resembles the external ear of a human (Figure 6.1.5). Auricles are rela...

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   The wall of the heart is composed of three layers of unequal thickness. From superficial to deep, these are the epicardium, the myocardium and the endocardium (see Figure 6.1.4). The outermost layer of the wall of the heart is also the innermost layer of the pericardium, the epicardium, or the visceral pericardium discussed earlier. The middle and ...

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   Recall that the heart’s contraction cycle follows a dual pattern of circulation—the pulmonary and systemic circuits—because of the pairs of chambers that pump blood into the circulation. In order to develop a more precise understanding of cardiac function, it is first necessary to explore the internal anatomical structures in more detail.

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   • Author: Anna Chruścik, Kate Kauter, Louisa Windus, Eliza Whiteside

   • Publish Year: 2021

8. www.kenhub.com › en › libraryHeart anatomy: Structure, valves, coronary vessels | Kenhub

   www.kenhub.com › en › library

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   Nov 3, 2023 · It has three semilunar cusps/leaflets: left/left coronary, right/right coronary, and posterior/non-coronary. In clinical practice, the heart valves can be auscultated, usually by using a stethoscope. In order to be successful, one needs to master the surface projections of the heart.

9. www.nhlbi.nih.gov › health › heartHow the Heart Works - What the Heart Looks Like - NHLBI, NIH

   www.nhlbi.nih.gov › health › heart

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   Mar 24, 2022 · Heart tissue. The heart is made of three layers of tissue. Endocardium is the thin inner lining of the heart chambers and also forms the surface of the valves. Myocardium is the thick middle layer of muscle that allows your heart chambers to contract and relax to pump blood to your body.