Heart Blood Screen Lock

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Heart Blood Screen Lock

What people need heart? Many songs and poems composed about the human heart. Everyone knows that it can love, hate, worry, suffering, compassion. Once the heart is able to hold and love and hate simultaneously. To read, to study the structure of the heart can be the addition of the heart. Load the app and get cool pictures on your phone screen.

Heart - a cone-shaped hollow muscular organ of the circulatory system, which cuts its rhythmic pumping blood or hemolymph through vessels of the body, thereby feeding and breathing tissue. In higher animals and human heart is a vital organ. During embryonic development, this body there is one of the first.

Weight hearts adult is 250-350 g Heart is located in the center of the chest, below the anterior mediastinum, pericardial and stored in a bag - the pericardium, which protects it from mechanical stress and infections and fixes other structures that surround it. The upper part of the heart is fixed on large vessels, the lower part is free and lies on the diaphragm.