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Anatomical structure of the heart

Posted by Unknown Thursday, January 24, 2013 1 comments

The outer surface of the heart

1. Pericardium

Heart in the sheath by a membrane called the pericardium lining the inside of the heart wrapping sticking very closely to the heart, while the outer layer more loose and watery, to avoid friction between the organs in the body that occurs due to the movement of the heart's pumping.

2. Heart Muscle

For the heart to function as an efficient pump, the heart muscles, upper cavity and bottom cavity must contract in turn. The heart has begun to beat the time in the womb and will never stop until our last breath.

The heart is the most amazing organ because of the relentless pumping oxygenated blood and nutrients in the blood throughout the body. The heart beats 100 thousand times per day, or about 2000 gallons of blood pumped per day. The heart is a muscle in the body turned out to be the most hard working, and the strongest. Heart wall is composed of three layers, from the inside consists of

Endocardium is the innermost layer of the heart is an endothelial layer that continues into the arteries and veins.
Myocardium is the muscular part of the heart terususn the heart muscle (myocardial). The heart muscles to contract and pump blood through the arteries.

Epicardium or the so-called "pericardium viscerais" is the outermost part of the heart is composed of connective tissue.

The outer surface of the human heart and vascular rear

Chambers of the heart

human heart is divided into 4 rooms left atrium right atrium and right and left ventricle chamber.

Between the right and left separated by intertrioler septum (the wall between the foyer).
Between the right and left ventricular chambers separated by interventrikuler septum (the wall between the chambers)
Between the left atrium to the left ventricle is limited by the valve bikuspidalis (mitralis).
Between the right atrium and the left ventricle is limited by the valve trikuspidalis
Between the left ventricle to the aorta is limited by the valve semilunaris aortae.
The right chamber with limited pulmonary artery pulmonary valve semilunaris.

Chambers of the heart

Chambers of the heart is the heart that has the ability to pump blood, while the foyer as passive recipients of blood. Because of these functions, it is structurally muscle ventricles are thicker (stronger) than muscle porch.

Similarly, the right and left chambers muscle thickness is different because of different duties. left ventricle has a thicker muscle than muscles as it works right chamber pumps blood throughout the body, while the right chamber serves to pump blood to the lungs. However, the right chamber has a larger space than the left ventricle.

Heart valve

Functioning heart valves keep blood pressure and keep the blood does not flow back into place. Valvula mitralis and trikuspidalis open because of blood coming from a systemic vein (the superior vena cava and inferior vena cava) and the pulmonary vein, if the chambers to contract close, but valvula semilunaris open and vice versa. Valvula ends connected by chordae tendineae to the cubicle wall at papillary musculus (m = musculus. Muscles).

There are 4 valves in the heart. Namely mitral, tricuspid, aortic, and pulmonik (often also called pulmomer). The valve serves to regulate the blood flow in the right direction. Each valve has a cover called leaflets or cusps. Mitral valve leaflets have 2 pieces, others feature 3 leaflets. The right and left heart work together to create a pattern which continued constantly, causing blood to continue to flow to the heart, lungs and other body parts.

Blood enters the heart through two large veins (venous cava) inferior and superior oxygen carrying empty from the body into the right side of the porch.
When the porch contracts, blood flows from the right porch toward the right ventricle through the tricuspid valve.
When the chamber is full, the valve will close to triskupid prevents blood from flowing back into the atria when ventricular contraction.
When the chamber contracts, blood flows through the pulmonik valves into the arteries and lungs which in This part of the blood oxygenated.
Part pulmonary vein empties oxygen-rich blood containing oxygen from the lungs into the left porch
When the porch contracts, blood flows to part venrikel left through the mitral valve.
When venrikel full, the mitral valve is closed to prevents blood from returning to the porch when the ventricles contract.
When the ventricle contracts, blood leaves heart through the aortic valve into the entire collapse.

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title: Anatomical structure of the heart
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