Trabajo Ingles El Corazón

Republica Bolivariana de Venezuela
Ministerio del Poder Popular para la Educación Superior
Universidad Nacional Experimental Rómulo Gallegos
Área: Ciencias de la Salud

The Heart

The heart is a pump with its driving action, provides the force necessary for the blood and carries substances that circulate adequately through the windows and arteries 

In each heartbeat,the heart ejects a certain amount of blood to the thicker artery (aorta) and successive branches leaving the aorta, the blood throughout the body Structure of the heart. 

From inside to outside the heart has the following layers: The endocardium, a serous membrane of endothelium and connective tissue lining, with which blood comes into contact. Includes fiber elastic and collagen, bloodvessels and muscle fibers specialized 
which are called Purkinje fibers. In its structure we find fleshy trabeculae, which give strength to increase contraction heart. 

The myocardium is a contractile muscle mass. Cardiac muscle itself, responsible for promoting blood through the body by its contraction. This layer is also found in connective tissue, capillaries blood, lymph capillariesand nerve fibers. 

The epicardium is a thin layer that surrounds the mesothelial serosa carrying heart capillaries and nerve fibers. This layer is considered part of the serous pericardium. 

Rear view of the Heart

Aorta

It is the body's main artery, which comes straight from the heart, specifically the left ventricle and gives rise to other arteries the circulatory system. Theaorta ends in the fourth lumbar vertebra, where splits to give rise to the so-called primitive iliac arteries. It’s central portion is called the arch or aortic arch, and has a part ascending, transverse and one other hand down (call aorta descending thoracic). The ascending portion is available free, but the portion has a transverse aorta first division, the brachiocephalic trunk. 

PulmonaryArtery

Is the artery through which blood passes from the right ventricle to the 
lungs to be oxygenated through the alveolar capillary barrier in a process known as hematosis. To do this, through the pulmonary valve to the right ventricular outflow. 

SVC is one of the two major veins of the body. It is a venous trunk or large vein that collects blood from the head, neck, upperlimbs and chest. It starts at the junction of the two brachiocephalic, goes straight down and flows into the right atrium. Returns the blood of all the structures that are above the diaphragm muscle with the exception of the lungs and heart.

The pulmonary veins are the set of veins that transport the oxygenated blood from the lungs to the heart. These are the only veins the body that carryoxygenated blood. 

Inferior vena cava is a large vein in the human body and other mammals, which returns blood from the lower limbs, organs abdomen and pelvis to the right atrium of the vein is heart. Satellite meets the abdominal aorta and venous return of all veins 
infradiaphragmatic. 

Major coronary vein is a vein that collects blood from the surface above the ventricles,follows the anterior longitudinal sulcus and empties in the coronary sinus. 

The left ventricle is the portion of the heart with the most muscle because the left ventricle is the one who drives blood into the aorta, which carries blood to most of 
body. The valve connecting the left ventricle to the aorta is called aortic valve. 

The right ventricle is one of the four chambers ofthe heart. The right ventricle receives oxygenated blood from the right atrium through the tricuspid valve and the driving out of the heart through the pulmonary artery.

Heart, front view. 

Right atrial appendage. It is one of the four heart chambers, located at the top and right of it. For their study is divided into two auriculilla or atrial appendage and 
atrium itself, this...