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Terms in this set (25)
What tissue type makes up the bulk of the heart?
myocardium
Which of the following descibes the pericardium?
prevents the heart from over filling
How does blood get carried to the myocardium?
through the coronary arteries
What is the groove in the pericardium that seperates the left side of the heart from the right side?
anterior and posterior interventricular sulcus
What part of the heart pumps blood to the lungs?
right ventricle
Which of the following correctly traces a drop of blood through the heart?
right atrium, right ventricle, pulmonary trunk, left atrium, left ventricle
Which of the following explains why the left ventricle wall is thicker than the other chamber heart walls?
that ventricle must pump blood with greater pressure
Which of the following describes the foramen ovale?
connects the two atria in the fetal heart
Which statement describes the structure of the heart wall?
the myocardium layer is the layer that actually contracts
Where is the sinoatrial node located?
right atrium
Which of the following describes the valves of the heart?
semilunar valves prevent backflow into the ventricles
Which of the following are involved directly in the pulmonary circulation?
right ventricle, pulmonary trunk and pulmonary veins
Which of the following describes cardiac muscle fibers?
the presence of gap junctions means that the muscle cells all contract together
Which of the following describes normal heart action?
the two atria contract and then the two ventricles contract
What does the term diastole represent?
heart muscle relaxation
Which vessel receives blood as a result of right ventricular systole?
pulmonary artery
Which of the following describes ventricular filling?
the blood flows passively through open AV valves
What cardiac events occur when the tricuspid valve is closed?
the ventricle is in systole
Which of the following describes the role of the atrioventricular bundle in the conduction system of the heart?
it is the electrical connection between the atria and the ventricles
What does the P wave of an electrocardiogram indicate?
atrial depolarization
waht is the average cardiac output for a resting adult?
5.25 liters
what causes normal heart sounds?
closing of the heart valves
aorta?
what abnormally is characterized by the sound of blood hitting obstacles in the chambers?
heart murmur
which of the following is associated with angina pectoralis?
temporary lack of oxygen to myocardial fibers
what term represents erratic heart rhythm?
arrhythmia
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