306 Week 2 Chapter 25 Quiz Review

Karyn has been having episodes of tachycardia (rapid heartbeat) associated with her congestive heart failure. Karyn does not want to add “yet another” medication to those she is already taking. Which of the following options might help Karyn control her rapid heartbeat without medication?

• maze procedure

• vagal maneuvers

• increased exercise

• increased caffeine intake

Which of these layers of the heart wall contains Purkinje fibers?

• epicardium

• myocardium

• endocardium

• pericardium

Which of the following does not cause an increase in the heart rate?

• strenuous exercise

• elevated body temperature

• parasympathetic nerve stimulation

• sympathetic nerve stimulation

In the clinical setting, blood pressure refers to __________.

• lymphatic pressure

• arterial pressure

• osmotic pressure

• venous pressure

Water is forced through capillary walls by __________.

• different concentrations of substances

• low pressure of the blood

• filtration

• osmosis

Which of the following keeps the heart rate relatively low?

• strenuous exercise

• elevated body temperature

• parasympathetic nerve stimulation

• sympathetic nerve stimulation

Which of the following is the innermost layer of the heart, which is thin and smooth?

• epicardium

• myocardium

• endocardium

• pericardium

Which part of the cardiac conduction system is located in the wall of the right atrium?

• SA node

• AV node

• bundle of His

• Purkinje fibers

Which of the following are the strongest blood vessels that function to carry blood away from the heart?

• arterioles

• arteries

• veins

• venules

The __________ lies on top of the visceral pericardium.

• fibrous pericardium

• parietal pericardium

• myocardium

• endocardium