Haney AP c14 DJW
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| What is the chemical energy that comes from food? | ATP
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| About how many times does the heart bet per minute? | 72
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| What is the heart positioned between? | The lungs in the mediastinum.
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| What is the loose fitting serous membrane covering the heart known as? | Pericardial sac
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| What is the outermost layer of the pericardial sac? | Fibrous pericardium
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| What is the innermost layer of the pericardial sac? | Serous pericardium
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| What is the name for the outermost layer of the wall of the heart? | Epicardium or visceral pericardium
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| What is between the epicardium and the serous pericardium? | Pericardial cavity
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| What does the pericardial cavity contain? | Pericardial fluid
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| What layer is underneath the epicardium? | Myocardium
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| What is the innermost layer of the heart? | Endocardium
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| What are the two upper chambers of the heart? | Left and Right Atrium
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| What is the external appendage of an atrium called? | Auricle
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| What lines the anterior atrial walls and the auricles? | Musculi pectinati
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| What are the lower chambers of the heart called? | Left and Right ventricle
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| What separated the two ventricles? | Interventricular septum.
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| What are the ridges inside the ventricles? | Trabeculae carneae
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| What separates the ventricles from the atria? | Coronary sulcus
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| The superior vena cava supplies blood to what? | Head, neck, and arms
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| The inferior vena cava supplies blood to what? | Legs and abdomen
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| What does the pulmonary trunk split into? | Right pulmonary artery and left pulmonary artery.
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| Oxygenated blood returns to the heart via what? | Pulmonary veins
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| What does the left ventricle pump blood to? | Ascending aorta
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| Where does the blood go from the ascending aorta? | Coronary arteries
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| What is the valve between the right atrium and right ventricle? | Tricuspid valve
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| What are the flaps that make the valves composed of? | Fibrous connective tissue
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| What are the chords that connect to the flaps? | Chordae tendineae
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| What do the chordae tendineae connect to at the other end? | Papillary muscles
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| The valve between the left ventricle and left atrium is known as what? | bicuspid or mitral valve
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| What are valves that prevent blood from flowing back into the pumping chambers? | Pulmonary semilunar valves
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| Where is the aortic semilunar valve found? | The opening where the ascending aorta leaves the left ventricle.
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| What is the hearts intrinsic regulating system called? | Conduction system
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| Where does the system begin at? | Sinoatrial node
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| What does the SA node depolarize? | atrioventricular node
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| What is the name for the atrioventricular bundle? | Bundle of His
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| What simulates the contraction of the ventricles? | Purkines's fibers
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| Systole is referred to when the heart is in what phase? | Contraction
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| Diastole is the term for a phase of what? | Relaxation
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| What three layers compose arteries, arterioles, veins, venules, and capillaries? | Tunica intima, tunica media and tunica adventitia.
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