Arteries arevesselsthat carrybloodaway from theheartand the aorta is the largest artery in the body. The heart is theorganof thecardiovascular systemthat functions to circulate blood along with pulmonary and systemic circuits. The aorta rises from the left ventricle of the heart, forms an arch, ...
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heartThe heart is a midline, valvular, muscular pump that is cone-shaped and the size of a fist. It weighs 300 g in adults and lies in the middle mediastinum of the thorax. The inferior (diaphragmatic) surface sits on the central tendon of the diaphragm, and the base faces posteriorly ...
Mediastinum vessels such as aorta, pulmonary arteries and veins, superior vena cava. Figure 6 - Left atrioventricular valve ; Mitral valve, Aortic valve, Right atrioventricular valve; Tricuspid valve, Pulmonary valve Figure 7 - Conducting system of heart : Sinuatrial node, Atrioventricular node, At...
On its superior end, the base of the heart is attached to the aorta, pulmonary arteries and veins, and the vena cava. The inferior tip of the heart, known as the apex, rests just superior to the diaphragm. The base of the heart is located along the body's midline with the apex poi...
Arteries. They begin with the aorta, the large artery leaving the heart. Arteries carry oxygen-rich blood away from the heart to all of the body's tissues. They branch several times, becoming smaller and smaller as they carry blood farther from the heart. ...
The aorta branches into the systemic arterial network that supplies all of the body. 4. The Valves Are Like Doors to the Chambers of the Heart Four valves regulate and support the flow of blood through and out of the heart. The blood can only flow one way—like a car that must always...
2. Cardiac Muscle: Cardiac muscle is involuntary muscle. This type makes up the walls of the heart and creates the steady, rhythmic pulsing that pumps blood through the body from signals from the brain. This muscle type also creates the electrical impulses that produce the heart’s contractions...
In the rest of the population, the ARAA does not supply the SAN artery and therefore does not contain this additional branching.[3][12] Surgical Considerations Due to the high volume of open-heart operations involving the right atrium, surgeons need to be familiar with the arrangement of the...
Representatives of the Alexandrian medical school (third centuryB.C.) performed autopsies on corpses and vivisections of criminals condemned to death. They discovered the diaphragm, studied the skeleton and viscera, and made observations about the lymphatics, nerves, heart valves, meninges, and so ...