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Terms in this set (23)
One large box on the EKG graph paper contains ______ small boxes and is _______ of a second.
Match the heart sound with its significance.
S1= Mitral and tricuspid valve closure; onset of ventricular systole.
S2= Pulmonic and aortic valve closure; onset of diastole.
S3= Early diastolic sound; pathological in adults.
S4= Late diastolic sound; associated with forceful atrial contraction.
Drugs mimicking cardiac function target the following receptors, EXCEPT:
GABA receptors (correct)
The Frank-Starling mechanism is most associated with:
Place in correct order the electrical conduction pathway of the heart.
1. Sinoatrial node.
2. Intraatrial pathways.
3. Atrioventricular node.
4. Bundle of His.
5. Bundle branches.
6. Purkinje fibers.
The primary function of the heart is to:
meet the metabolic demands of the body.
The repolarization of cardiac myocardium is generally described to be in what state?
Overriding a pacemaker's inherent rate is called:
Which type of cardiac cell is responsible for electrical impulse conduction?
Intervals are ________; segments are __________.
waves and segments; straight lines
Regularity of the rhythm is determined by:
The change in cellular charge and the initiation of the action potential is:
Normal P waves should be:
Positive and round
Cardiac function is controlled by which of the following mechanisms?
1. Sympathetic nervous system
2. Parasympathetic nervous system
3. Renal system
4. Hepatobiliary system
(1, 2, & 3)
Match the cardiac tissue layer with its appropriate function and location.
Pericardium= Fibrous covering of the heart.
Epicardium= Outermost layer of the heart, contains the nerves and coronary vessels.
Myocardium= Physical, mechanical pumping cells of the heart.
Endocardium= Interior layer of cardiac tissue which contain the pacemaker cells.
Depolarization of the myocardial cells:
Create the surface waveforms of the EKG tracing.
Upward deflected EKG complexes result from electrical flow towards:
The positive lead.
The sinoatrial node has an inherent heart rate of:
The use of the AV Junction as the pacemaker for the heart is an example of:
Which of the following is the major extracellular electrolyte?
Small differences in this electrolyte can have devastating cardiac consequences.
The equation "CO = HR x SV" refers to:
The PR-Interval represents all of the __________ electrical activity; it should be between _____ and _____ seconds.
THIS SET IS OFTEN IN FOLDERS WITH...
Exam 2 (Units 3-5)
Exam 3 (Sinus and Supraventricular Rhythms)
Exam 4 (AV Blocks and Ventricular Rhythms)
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