Heart 1
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| What are the heart and roots of the great vessels enclosed in | pericardium
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| What are the two serous membranes | Visceral pericardium and parietal pericardium
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| Visceral pericardium | inner layer of sac thats attached to the heart like skin of apple
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| Parietal pericardium | outer sac thats fibrous and is made of connective tissue
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| pericardial cavity | space between pericardial coverings
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| serous fluid | thin layer of water fluid that lessens friction caused by pumping of the heart
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| pericarditis | inflammation of the serous membranes covering the heart
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| How is the heart situated | obliquely between the lungs
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| The rib cage aids in | protection for the heart from forces of the external environment
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| is the heart static or not static | not static
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| Right border | curved line from 3rd rib to junction of xyphoid process and body of sternum.
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| Left border | curved line from 2nd rib to left 5th intercoastal space
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| Lower border | line passing through junction of body and xyphoid process of sternum
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| How far does heart extend | 3rd rib
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| how far does pericardial sac extend | 2nd rib
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| anterior surface | formed by right atrium and right ventricle
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| inferior surface | surface on which heart rests and is formed by both ventricles
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| Grooves | partitions between chambers and where coronary blood vessels run
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| atrioventricular sulcus | separates atria from ventricles and origin of right and left coronary artery and circumflex artery
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| anterior/posterior interventricular sulci | separates right and left ventricles and contains inter ventricular arteries
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| What is the heart wall composed of | epicardium myocardium and and endocardium
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| Epicardium | Visceral, outermost, fibrous CT, coronary vessels
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| myocardium | middle, cardiac muscle, conduction capabilities
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| endocardium | innermost, simple squamos, endothelial cells, valves are also covered with this.
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| How do you enter the heart | superior or inferior ven cava or the coronary sinus
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| coronary sinus | carries blood from the coronary circulation
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| 1st step in path of heart | enter through a major vein
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| 2nd step in path of heart | Right atrium
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| Right atrium has | right atrial septum at the left and a fossa oval and the left atrium and tricuspid valve and SA and AV nodes for conduction
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| 3rd step in path of heart | Tricuspid valve
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| 4th step in path of heart | Right ventricle
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| Right ventricle has | papillary muscles, chordae tendineae and pulmonary trunk
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| Papillary muscles | fingerlike extensions from wall of heart, prevents inversion and stabilizes valve. NOTHING TO DO WITH CLOSING OF THE VALVE!!!!
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| chordae tendineae | strings on a guitar
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| pulmonary trunk | divides into 2 pulmonary arteries which carry deoxygenated blood to the lungs.
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| How do arteries return | via pulmonary veins carrying oxygenated blood
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| 5th step in path of heart | pulmonary semilunar valve
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| 6th step | pulmonary artery
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| 7th step | lungs
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| What do you do in the lungs | pick up oxygen and release co2
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| How do you return to heart | through 1 of 4 pulmonary veins
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| Pulmonary veins | carry oxygenated blood away from the heart
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| 8th step | left atrium
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| 9th step | Bicuspid valve
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| 10th step | left ventricle
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| 11th step | aortic semilunar valve
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| 12th step | leave heart and enter arch of the aorta
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Created by:
maheensa
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