Problem-Solvingproblem-solving Activity The following problem solving assessment is presented in a multiple-choice format. Each oice should be considered individual
Problem-Solvingproblem-solving Activity
The following problem solving assessment is presented in a multiple-choice format. Each oice should be considered individually, and an argument should be written for accepting or rejecting it. Since he problem has one best answer, there should be one argument for acceptance and four for rejection.
For each response, you must first state whether you accept or reject that statement. Then, ou must write a detailed explanation why you accept or reject ALL of the choices.
PROBLEM:
In some people, caffeine may increase excitability of a region of ventricular muscle. In th situation, the ventricular region may initiate an action potential that spreads over the ventricles and produces a premature ventricular contraction (PVC). Becau this contraction is premature (that is, occurs slightly before the time at which it would occur otherwise), a longer-than-normal amount of time elapses before the next ventricular contraction, which occurs at the normal time. This next ventricular contraction is unusually strong and is often noticed by the person, who reports that his or her heart has “skipped a beat.” Why is the ventricular contraction following a premature contraction unusually strong?
It must overcome the pressure of blood that has accumulated in the pericardial cavity.
More blood accumulated in the ventricles and the contraction needs to be stronger to eject it.
Blood volume fell to a critical level and more blood is required.
A thrombus developed and obstructed a coronary artery.
The AV bundle was blocked immediately following the PVC.
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