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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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the heart is locaed in the?
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mediastinum
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what is the Membrane surrounding and protecting the heart?
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pericardium
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what is the tough, inelastic, dense irregular connective tissue – prevents overstretching, protection, anchorage?
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Fibrous pericardium
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what is the thinner, more delicate membrane – double layer (parietal layer fused to fibrous pericardium, visceral layer also called epicardium?
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Serous pericardium
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Pericardial fluid reduces friction and is secreted into the?
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pericardial cavity
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what are the layers of the heart?
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epicardium- visceral layer of serous pericardium
myocardium- 95% of the heart is cardiac muscle Endocardium- smooth lining for chambers of the heart |
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how many chambers of the heart?
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2 atria and 2 ventricles
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the sulci on the heart contain?
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blood vessels and fat
what are they called? |
Coronary sulcus
Anterior interventricular sulcus Posterior interventricular sulcus |
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what Receives blood from:
Superior vena cava Inferior vena cava Coronary sinus |
right atrium
the Blood passes through tricuspid valve (right atrioventricular valve) into ? |
right ventricle
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the left atrium Receives blood from the ?
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lungs through the?
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pulmonary veins
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During fetal life ductus arteriosus shunts blood from pulmonary trunk to aorta (lung bypass) closes after birth with remnant called ?
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ligamentum arteriosum
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why are the atria thin walled?
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bc they deliver blood under less pressure to ventricles
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Right ventricle pumps blood to ?
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lungs;
Shorter distance, lower pressure, less resistance |
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Left ventricle pumps blood to ?
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body:
Longer distance, higher pressure, more resistance |
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Left ventricle works harder to maintain same rate of blood flow as ?
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right vent
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