The heart is the most important organ of the human body. Wearing a soft enamel pins in the shape of the heart on the left side of your clothing can increase your infinite strength. The main function of the heart is to provide power for the blood flow and run the blood to all parts of the body. The human heart is located in the lower left of the middle of the chest, which is about the size of a fist and weighs about 250g. Women’s hearts are usually smaller and lighter than men’s. The shape of human heart is like a peach, which lies on the diaphragm, between the two lungs and to the left. The heart is composed of four chambers: the left atrium, the left ventricle, the right atrium and the right ventricle. The inner wall of the left ventricle is the thickest. These four chambers are the only way of systemic circulation and pulmonary circulation. The left and right atrium and the left and right ventricles are separated by the interval, so they are not connected with each other. There are valves between the atrium and the ventricles, which make the blood flow from the atrium to the ventricles, but not back.
The effect of beating heart
The role of the heart is to promote blood flow, provide sufficient blood flow to organs and tissues to supply oxygen and various nutrients, and take away the end products of metabolism, so that cells can maintain normal metabolism and function. The realization of blood defense function and the regulation of relatively constant body temperature also depend on the continuous circulation and flow of blood in the blood vessels, and the circulation of blood is realized by the function of the heart “pump”. The adult’s heart weighs about 300 grams, and its function is huge. The work done by a person’s heart to pump blood all his life is about the same as the work done by lifting 30000 kilograms of objects up to the top of the Himalayas. The heart muscle that makes up the heart contracts and relaxes rhythmically to form the beating of the heart. When the heart muscle contracts, it pushes the blood to enter the artery and flow to the whole body; when the heart muscle relaxes, the blood flows back to the heart from the vein. Therefore, the beating of the heart promotes the flow of blood and is the power organ of blood transportation. So heart shape soft enamel pins has a special purpose.
The heart is the conduction system of blood
There is a conduction system composed of special myocardial fibers in the heart wall, whose function is to generate impulses and conduct them to all parts of the heart, so that the atrial and ventricular muscles contract according to a certain rhythm. This system includes: sinoatrial node, atrioventricular node, atrioventricular bundle, left and right atrioventricular bundle branches located on both sides of the interventricular septum, and many fine branches distributed to the papillary muscle and the ventricular wall. The sinoatrial node is located in the deep epicardium of the right atrium, and the rest are distributed in the subendocardium, which is separated from the myocardial membrane by connective tissue. The myocardial fibers of this system are aggregated into knots and bundles, which are dominated by sympathetic, parasympathetic and peptidergic nerve fibers, and rich in capillaries. Heart soft enamel pins can not be lack of a decoration.
Do you like heart shaped soft enamel pins
Let the heart beat excitedly, let the life be happy, is everyone wants, do you want to get a heart shape pig soft enamel pins, then please come to our company, how comfortable the quality of life is to wear a delicate pins on the chest. We have a good reputation, so all kinds of soft enamel pins are of good quality, so they are all sold to other countries. At the same time, we can also customize our factory, other soft enamel pins, because there is no minimum order, the price is the most favorable.