Heart Anatomy (Exercise 30)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| where is the heart located | within the mediastinum, or medial vacity of the thorax
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| it is flanked ___ by the lungs, ____ by the vertebral column, & ____ by the sternum | laterally by the lungs, posteriorly by the vertebral column, & anteriorly by the sternum
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| pericardium | encloses the heart within a double-walled fibroserous sac
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| visceral pericardium | epicardium- is thin; closely applied to the heart muscle, reflects downward at the base of the heart to form its compaion serous membrane
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| parietal pericardium | outer, looser, attached at the heart apex to the diaphragm
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| fibrous pericardium | (loosely fitting, superficial), composed of dense connective tissue, lined by the serous parietal pericardium
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| pericarditis | inflamation of the pericardium, causes painful adhesions between the serous pericarial layers (interferes with heart movements
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| myocardium | cardiac muscle that the walls of the heart are composed primarily of, it is reinforced internally by a dense fibrous connective tissue network
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| fibrous skeleton of the heart | is the network that is more elaborate & thicker in certain areas, Ex. around valves & at the base of the great vessels leaving the heart
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| name the four chambers of the heart | 2 superior atria & 2 inferior ventricles
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| endocardium | lines the chambers, thin serous endothelium
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| interatrial | (interventricular septum); septum that divides the heart longitudinally
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| blood flows into the atria under ____ from the ___ | low pressure; veins of the body
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| the R atrium receives _____ from the body via the __ & __ | relatively oxygen-poor blood, via superior & inferior venae cavae & the coronary sinus
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| what do the 4 pulmonary veins do? | deliver oxygen-rich blood from the lungs to the left atrium
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| what do the inferior thick-walled ventricles do? | form the bulk of the heart & are the discharging chambers (force blood out of the heart into the large arteries that emerge from its base)
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| pulmonary trunk | (recives blood fr. R ventricle), then it routes blood to the lungs to be oxygenated
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| aorta | recives discharged blood from L ventrcle, all systemic arteries of the body diverge to supply the body tissues
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| ventricular activity | refers to discussions of the heart's pumping action
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| AV | atrioventricular valves, located between the atrial & ventricular chamber son each side, prevent backflow into the atria when the ventricles are contracting
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| mitral | bicuspid valve, two cusps(flaps) of endocardium (L AV )
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| tricuspid valve | R AV; 3 cusps
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| chordae tendineae | tiny white collagenic cords (heart strings) anchor the cusps to the ventricular walls
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| papillary muscles | project from the myocardial wall that create the chordae tendineae
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| diastole | period of ventricular filling
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| systole | ventricles contract & compress the blood into their chambers
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| pulmonary & aortic semilunar valves | 2nd set of valves, composed of 3 pocketlike cusps, gauards the bases of the 2 lg arteries leaving the ventriclular chambers
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| pulmonary circulation | R side, pump, shunting the carbon dioxide- rich blood entering its chambers to the lungs to unloade CO & pick of O, back to the L side
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| systemic circulation | carries O-rich blood fr. L heart through body tissues & back to R heart (supplies functional blood supply to all body tissues
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Brina
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