![]() The coronary arteries, which supply the heart with oxygen, exit the aorta just above the level of the aortic valve. Blood flow out of the left ventricle is via a further cusped valve - the aortic valve. From here, the blood enters the left ventricle (LV) via another cusped valve - the mitral valve. Once the blood has been enriched with oxygen, the pulmonary circulation returns it into the left atrium (LA) via pulmonary veins, of which there are normally four in the human body. The pulmonary artery feeds oxygen-depleted blood into the pulmonary circulation. Blood is then pumped out of right ventricle (RV) and towards the lungs, with the pulmonary valve preventing any back-flow of blood into the right ventricle. When the ventricles contract, the tricuspid valve (the valve between the right atrium and the right ventricle) prevents the blood from flowing back into the atrium. The superior and inferior vena cava, which feed into the right atrium (RA), return oxygen-depleted blood from the systemic circulation to the heart. Blood returning from the organs back to the heart does so via a single vein. Blood is transported away from the heart and towards the organs via a single artery. The atria and ventricles are separated by the septum, while the heart valves act as one-way valves - ensuring that blood flow through the heart is only in one direction. The human heart has four chambers, two upper chambers (atria) and two lower chambers (ventricles). On the inside, the heart is lined with a thin membrane, the endocardium. Beneath the epicardium is the myocardium - the actual heart muscle. On the inside, the heart is lined with a thin membrane, the endocardium. Beneath the pericardium is the epicardium, a layer of the heart that contains adipose tissue (epicardial fat) and which encloses the coronary arteries. The heart is completely enclosed by the pericardium: a sac made of connective tissue. ![]() In the human body, the heart is located behind the sternum (breastbone) and slightly to the left of the midline. At approximately 0.5% of a person's body weight, a healthy heart averages between 300 and 350g. The heart is roughly the size of a fist, with its shape resembling that of a cone with rounded edges, and with its tip (apex) pointing downwards and slightly towards the front and left. Ibn al-Nafis (1213-1288), an Arab physician, was the first person to provide an anatomically-correct description of the heart, while the English physician William Harvey (1587-1657) is credited with being the first person to demonstrate that the heart's pumping action results in the movement of blood around the body. The heart is a hollow, muscular organ whose rhythmic contractions lead to the movement of blood and lymph around the body, thus ensuring organ perfusion. Photos from the Department of Cardiac Surgery.Photos from the Department of Cardiology.Photos from the Department of Anesthesiology.The making-of: the 20th Heart Center Open Day.Images of the 20th Heart Center Open Day.Continued professional development (CPD).Medical electronics & equipment - Intensive Care Unit.Medical electronics & equipment - operating rooms.Medical electronics & equipment - catheterization laboratories.Medical electronics & equipment - Department of Diagnostics.Medical electronics & equipment Show submenu.Heart Failure (HF) Outpatient Clinic - in accordance with Section 116b, SGB V (Social Law Book).Inpatient treatments available in the Department of Cardiology.Department of Nursing and Care Services / Patient Management.Anesthesiology, Intensive Care Medicine and Pain Management.Prevention of heart disease Show submenu.Cardiovascular magnetic resonance imaging (cardiac MRI). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |