The Heartt Word Scramble
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Question | Answer |
Hemorrhage results in an increased heart rate through the: | baroreceptor reflex |
The second heart sound occurs as a result of valve closure due to: | ventricular relaxation |
The term __________ refers to a heart valve which is stiffened and narrowed. | stenosis |
The vagus has effects on: | The SA and AV nodes only |
In a healthy heart an increase in myocardial stretch will result in __________ force of ventricular contraction. | increased |
The fastest autorhythmicity in the heart is located in the: | SA node |
An increase in the threshold of the hearts myogenic cells will: | decrease the rate of autorhythmicity |
The absence of a P wave in the ECG indicates damage in: | The atrial muscle or SA node |
There are ____ syncytia in the heart. | Two, the atrial muscle and the ventricular muscle |
Most ventricular filling occurs during: | Quiescent period |
As a result of exercise the cardiac center receives input from the: | The hypothalamus |
The principal cause of increased EDV is: | increased venous return |
The .1 second delay inherent in the conduction pathway occurs in the: | AV node |
Which valve closes to produce the first heart sound. | Both AV valves |
The _____ fill with blood and prevent backflow into the atria when the right ventricle contracts. | tricuspid valve |
The _____ is an ear-like flap whose cavity is continuous with that of the atrium | auricle |
The specialized muscles which line the ventricles and carry the Purkinje fibers to the ventricular myocardium are called: | trabeculae |
The coronary arteries arise from an area __________. | Located behind the aortic semilunar valves. |
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