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Heart
- four chambered pump for the cardiovascular system,
- distributing oxygen and nutrients to cells contained in blood.
- Your heart beats about 100,000 times each day,
- pumping 8000 liters of blood.
- Blood flows through a network of blood vessels that extend between the heart, peripheral tissues, and then back to the heart.
- On its path through the heart, the blood must also travel through the lungs, picking up oxygen and releasing carbon dioxide.
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The heart lies between the lungs
- in a region called the mediastinum
- posterior to the sternum
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The great veins and arteries are connected to the heart at the
superiorly located base
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Blood vessels enter and exit from the _____ of the heart
The Base
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The Pericardium
The lining of the pericardial cavity
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Membrane surrounding the heart
- The innermost is the visceral pericardium
- the middle is the parietal pericardium
- the outer extra one, called the fibrous pericardium
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There's a tiny space between the visceral pericardium and the parietal pericardium
pericardial cavity
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Pericarditis
Inflammation of the pericardium
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The heart wall has three layers
- The outer layer, or epicardium, is the the exact same structure we called the visceral pericardium
- The myocardium, the middle layer of the heart wall, is responsible for contraction of cardiac muscle
- The third heart wall layer, found on the inner side of the cardiac muscle, is the endocardium
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E.Z. Goen is admitted to the cardiac unit with a diagnosis of endocarditis. When E.Z. asks the nurse where the infection is located, the nurse replies that the infection is in
the inner lining of the heart
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The muscle layer of the heart, whose fuction is to act as the pump for the cardiovascular system is the
myocardium
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The endocardium
is the smooth inner lining of the heart chambers
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- Superior Vena Cavae & Inferior Vena Cavae
- Right Atrium
- Tricuspid Valve
- Right Ventricle
- Pulmonary Valve
- Pulmonary Trunk
- Ateries
- Lungs
- Pulmonary Veins
- Left Atrium
- Bicuspid Valve
- Left Ventricle
- Aortic Valve
- Aorta
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The AV valve (AV means atrio-ventricular) that is located on the same side of the heart as the origin of the aorta is the
- bicuspid valve
- Same side Bi
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Blood in the superior vena cava will enter the _____.
right atrium
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