Category: Anatomy

Anatomy

Systemic capillaries

The systemic capillaries are tiny delicate blood vessels that sustain life. They bridge the gap between the arteries and veins of the circulatory system. It is at this microscopic location that the respiration and nourishment of the cells of the human body take place.

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Anatomy

The pericardium

The pericardium is a sac surrounding the heart and containing a lubricating fluid that allows it to glide with each beat without friction.

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Anatomy

The Coronary Arteries

Normal heart function is closely linked to oxygenation.
Its precious fuel is delivered to the heart by the coronary arteries. Any reduction in oxygen supply can have serious and sometimes irreversible effects on the heart.

Let’s take a closer look at the coronary arteries.

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Anatomy

The electrical system of the heart

The heart has an electrical system that synchronizes its contraction efficiently.
The upper chambers, the atria, must first contract to fill the ventricles in the lower part of the heart. These, in turn, will compress and, in an inescapable upward movement, spill their contents into the large vessels at the top.

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Anatomy

Tricuspid valves

Tricuspid valves include the pulmonary and the aortic valves. Each has 3 cusps that fit onto a fibrous ring in the cardiac skeleton. These valves separate the pulmonary artery from the right ventricle and the aorta from the left ventricle.

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Anatomy

Atrioventricular Valves

The 2 valves that separate the ventricles from the atria are called atrioventricular valves. The tricuspid valve is located on the right side and the mitral valve is on the left.

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Anatomy

The Heart, from Every Angle

The heart is a muscular organ about the size of a closed fist. It is located in the center of the chest, between the 2 lungs. The heart is a marvelous, almost indefatigable organ. It enables blood to circulate throughout the body.

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