Tuesday, January 8, 2008

Toront0 Versa Tan Booth For Sale



cardiac morphology

CAVITIES CARDIAC
The heart has four chambers, two atria or upper (or atria) and two lower ventricles. The atria receive blood from the venous system, pass to the ventricles and from there out to the arterial circulation.
The right atrium and right ventricle forming what traditionally is called the right heart. Receives blood coming from all over the body, which flows into the right atrium through the superior and inferior vena cava. This blood is low in oxygen, reaches the right ventricle, where it is sent to the pulmonary circulation through the pulmonary artery. Since the resistance movement lung is smaller than the systemic, the force that the ventricle must do is lower, which is why its size is considerably smaller than the left ventricle.
The left atrium and left ventricle are called the left heart. Receives blood from the pulmonary circulation, which flows through four pulmonary veins to the upper portion of the left atrium. This oxygenated blood from the lungs. The left ventricle sends it through the aorta for distribution throughout the body.
tissue separating the right heart called the left septum. Functionally, it is divided into two separate parties: the upper or atrial septum, and interventricular septum or less. The latter is especially important because he runs the bundle of His, that allows to boost the lower parts of the heart.

HEART VALVE
heart valves are the structures that separate cavities of other, preventing retrograde reflux exists. Are located around the atrioventricular orifices (or atrioventricular) and between the ventricles and arteries out. They are four:
The tricuspid valve separates the right atrium of the right ventricle.
valve lung, which separates the right ventricle to the pulmonary artery.
mitral valve, which separates the left atrium of the left ventricle.
aortic valve, which separates the left ventricle to the aorta.

STRUCTURE OF THE HEART
From inside to outside the heart has the following layers:
The endocardium, a layer of endothelial lining, with which contact blood.
myocardium, the heart muscle itself, that pushes blood through the body.
The pericardium is a fibroserosa layer that surrounds the heart and divides into two parts:
fibrous pericardium, is the outermost part of the pericardium and rugged, composed of dense connective tissue.
Serous Pericardium: It is internal and is composed of two layers (parietal and visceral) and has a lubricating function.

0 comments:

Post a Comment