Exam 11: Cardiovascular Anatomy and Physiology

Place the following components of the cardiac conduction pathway in the correct anatomic order. 1)Atrioventricular node 2)Bundle branches 3)Bundle of His 4)Internodal pathways 5)Purkinje fibers 6)Sinoatrial node

Which of the following is most descriptive of the capillary?

The atrioventricular (AV)node delays the conduction impulse from the atria (0.8-1.2 seconds)for what reasons?

What percentage of volume does atrial kick contribute to ventricular filling?

Which is an example of a physiologic shunt?

A patient is admitted with a diagnosis of acute myocardial infarction.The monitor pattern reveals bradycardia.Occlusion of which coronary artery most likely resulted in bradycardia from sinoatrial node ischemia?

Which of the following values reflects a normal cardiac output at rest?

What are the two important proteins contained within the cardiac cells that contribute to contraction?

What is the function of the atrioventricular (AV)valves?

What is one hemodynamic effect of a pericardial effusion?

Which statement regarding the autonomic nervous system's role in the regulation of heart rate is true?

A patient is admitted with right- and left-sided heart failure.The nurse's assessment reveals that the patient has 3+ pitting edema on the sacrum,blood pressure of 176/98 mm Hg,and bilateral crackles in the lungs.The patient is experiencing shortness of breath and chest discomfort.Increased afterload is probably present related to the patient's blood pressure.Which therapeutic measure will most likely decrease afterload in this patient?

Which step of impulse conduction is most conducive to atrial kick?

What is the name of the valve that allows blood flow into pulmonary artery?

An echocardiogram reveals an ejection fraction of 55%.On the basis of this information,how would the patient's cardiac function be described?

Depolarization of one myocardial cell will likely result in what physiologic response?

Which factors influence stroke volume?

Which phase is the final repolarization phase of the action potential?

A patient is admitted with right- and left-sided heart failure.The nurse's assessment reveals that the patient has 3+ pitting edema on the sacrum,blood pressure of 176/98 mm Hg,and bilateral crackles in the lungs.The patient is experiencing shortness of breath and chest discomfort.On the basis of this information,how would the nurse evaluate the patient's preload status?

A patient reports feeling dizzy after standing quickly.Which finding could provide a clue regarding the cause?