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What is the chemical energy that comes from food?
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About how many times does the heart bet per minute?
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Haney AP c14DJW

Haney AP c14 DJW

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