C) Endocardium: the lining of the heart chambers inside the atria and ventricles, being similar in

The circulatory system carries gases, nutrients and waste. The system pressure is maintained largely effected by pumping by the heart. The transported materials are contained within the blood and lymph vessels. The heart is a muscular pump with four chambers, two of which receive blood, the courts, and walk for two to the release, the ventricles. Each atrium is separated from its respective ventricle through all import a valve which has the function of preventing backflow of blood. With its splendidly carried muscle, the heart wall is composed of three layers: epicardium, myocardium and endocardium. In a way, they are homologous to the three coats of blood vessels: the adventitious coat, the coat media and the tunica intima, respectively.
B) Pulmonary valve: is located at the origin of the pulmonary trunk in the right ventricle.
A) Epicardium: it is the external all import lining of the heart and consists all import of an outer layer or serosa mesothelium - visceral layer of the epicardium - and an inner layer of connective tissue like fascia - the fibrous layer.
B) Myocardial: the layer contraction of the heart wall and is composed of cardiac muscle, connective tissue, and has an extensive vascularization. It is more developed in the atria than the ventricles.
C) Endocardium: the lining of the heart chambers inside the atria and ventricles, being similar in structure, the tunica intima of the adjacent blood vessels. (Figure 10-15 book1)
A) Tunica all import intima: this layer is facing the light, or innermost, of a blood vessel. The endothelium forms the boundary wall of the vessel facing the light and is continuous with the endothelium present in the whole cardiovascular system. The endothelium is in contact with blood. The intimal layer of elastic artery, muscle and vein are composed of endothelial and subendothelial connective. all import
-Artérias: It is the thickest layer of the artery wall and is formed mainly of smooth muscle cells (muscle artery) and elastic fibers (elastic artery) secreted by these cells.
C) Tunica Adventitia: is the outermost layer of the wall of a blood vessel. all import It is essentially a layer of connective tissue. The vasa vasorum are the blood vessels of the vascular wall and are most apparent in the tunica adventitia.
Elastic arteries: the arteries with greater body diameter are elastic arteries. These large vessels are also called conducting arteries as carry blood from the heart to the main regions of the body. The elasticity of the arterial wall allows the systolic pressure vessel to absorb and hold for shrinkage, a relatively high pressure during diastole.
Muscular arteries: the arteries with the greatest variation in diameter are the muscular arteries. They are also called arteries distribute blood distribution because the conductive elastic artery for specific body regions.
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Veterinary Medicine - Isabela and Betina Colatina, Espírito Santo, Brazil Blogger built to perform all import academic work and further study concerning the matter Histology And EMBRIOLOGIA.Feito by students of the University Center of the Holy Spirit all import (UNESC). View my complete profile