Week 5 Cardiac Self assessment quiz PDF

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practice questions for cardiac exam...

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Self-Assessment Quiz Competency 1: Cardiac 1. Identify the structures in the following illustration.

2. The three main coronary arteries are the __________, __________, and __________. 3. The ________________ is the primary pacemaker of the heart. 4. Blood flow into the coronary arteries occurs primarily during the ___________ phase of the cardiac cycle. 5. Alternate routes of blood flow to the myocardium that develop with gradual obstruction of the coronary arteries are called __________ circulation. 6. Number in sequence the path of the action potential along the conduction system of the heart.

_____a. _____b. _____c. _____d. _____e. _____f. _____g. _____h.

AV node Purkinje fibers Internodal pathways Bundle of His Ventricular cells SA node Right and left atrial cells Right and left bundle branches

7. Indicate what factor of Cardiac output , i.e., stroke volume (preload, afterload or contractility) and heart rate, is primarily affected by the following situations, and whether cardiac output is increased or decreased by the factor. a. b. c. d. e.

Venous dilation _____________ Hypertension _____________ Administration of epinephrine __________ Hemorrhage _____________ Pain and fever _____________

CO____________ CO____________ CO____________ CO____________ CO____________

8. Match the effects of the autonomic nervous system stimulation with the receptors responsible for the effects (answers could be used more than once): 1. alpha receptor stimulation 2. beta receptor stimulation 3. parasympathetic stimulation

_____a. _____b. _____c. _____d. _____e. _____f.

Increased force of contraction Decreased rate of impulse conduction Vasoconstriction Increased heart rate Bronchodilation Vasodilation

9. Explain Starling’s law of the heart. 10.You are caring for a patient who is complaining of fatigue, stating that “I keep waking up feeling terribly short of breath. After I sit up for

awhile, I feel better and go back to sleep. Later, this will happen all over again.” How do you explain this phenomenon, in terms of what we have reviewed about cardiac output and the factors that affect it?...