What term refers to an abnormally slow heart rate? Multiple Choice Fibrillation Tachycardia Infarction Bradycardia What blood vessels hold the greatest volume of blood? Multiple Choice Arterioles Arteries Veins Capillaries What is a function of the pulmonary circuit? Multiple Choice It carries oxygen-poor blood to the lungs. It carries oxygen-poor blood to the tissues. It carries oxygen-poor blood from the tissues. It carries oxygen-poor blood to the heart. What type of arrhythmia is most life threatening? Multiple Choice Ventricular fibrillation Atrial fibrillation Ventricular flutter Atrial flutter Name the tough outermost layer of the sac that surrounds the heart. Multiple Choice Epicardium Visceral pericardium Fibrous pericardium Endocardium Which of the following helps return blood to the heart? Multiple Choice Contracting skeletal muscles Valves in the arteries Positive pressure in thoracic cavity End systolic volume Which valve is located between the left atrium and left ventricle? Multiple Choice Mitral valve Aortic valve Tricuspid valve Pulmonary valve Plasma proteins contribute to the pressure of the blood. Multiple Choice central venous osmotic filtration hydrostatic What is the correct sequence of components of the cardiac conduction system? Multiple Choice SA node Purkinje fibers AV node AV bundle AV node AV bundle Purkinje fibers SA node AV node SA node Purkinje fibers AV bundle SA node AV node AV bundle Purkinje fibers During ventricular contraction, what is the status of the atrioventricular valves? Multiple Choice The mitral and tricuspid valves both are open. The mitral valve is opened and the tricuspid valve is closed. The tricuspid valve is open and the mitral valve is closed. The mitral and tricuspid valves both are closed. Name the layers of the the wall of the heart and surrounding structures from deep to superficial. Multiple Choice Epleardum, myocardium, endocardium, pericardial cavity, parietal pericardium, fibrous pericardium Flbrous pericardium, parietal pericardium, pericardial covity, epicardium, myocardlum, endocardium Myocardium, endocardium, epicardlum, fibrous pericardium, pericardial cavity, parietal pericardium Endocardium, myocardium, epicardlum, pericardial cavity, parietal pericardium, fibrous pericardium What is the normal pacemaker of the heart? Multiple Choice AV bundle Purkinje fibers Sinoatrial node Atrioventricular node What is a function of the systemic circuit? Multiple Choice It carries oxygen-rich blood to the heart. It carries oxygen-rich blood from the lungs. It carries oxygen-poor blood to the tissues. It carries oxygen-poor blood to the heart. What causes the T wave on an ECG? Multiple Choice Repolarization of ventricular myocardium Depolarization of atrial myocardium Depolarization of ventricular myocardium Repolarization of atrial myocardium Why is the cardiovascular system vital to survival? Multiple Choice It delivers waste molecules to vital organs. It supplies oxygen and nutrients to.

1. What term refers to an abnormally slow heart rate? Multiple Choice Fibrillation Tachycardia
Infarction Bradycardia What blood vessels hold the greatest volume of blood? Multiple Choice
Arterioles Arteries Veins Capillaries What is a function of the pulmonary circuit? Multiple
Choice It carries oxygen-poor blood to the lungs. It carries oxygen-poor blood to the tissues. It
carries oxygen-poor blood from the tissues. It carries oxygen-poor blood to the heart. What type
of arrhythmia is most life threatening? Multiple Choice Ventricular fibrillation Atrial fibrillation
Ventricular flutter Atrial flutter Name the tough outermost layer of the sac that surrounds the
heart. Multiple Choice Epicardium Visceral pericardium Fibrous pericardium Endocardium
Which of the following helps return blood to the heart? Multiple Choice Contracting skeletal
muscles Valves in the arteries Positive pressure in thoracic cavity End systolic volume Which
valve is located between the left atrium and left ventricle? Multiple Choice Mitral valve Aortic
valve Tricuspid valve Pulmonary valve Plasma proteins contribute to the pressure of the blood.
Multiple Choice central venous osmotic filtration hydrostatic What is the correct sequence of
components of the cardiac conduction system? Multiple Choice SA node Purkinje fibers AV
node AV bundle AV node AV bundle Purkinje fibers SA node AV node SA node Purkinje fibers
AV bundle SA node AV node AV bundle Purkinje fibers During ventricular contraction, what is
the status of the atrioventricular valves? Multiple Choice The mitral and tricuspid valves both are
open. The mitral valve is opened and the tricuspid valve is closed. The tricuspid valve is open
and the mitral valve is closed. The mitral and tricuspid valves both are closed. Name the layers
of the the wall of the heart and surrounding structures from deep to superficial. Multiple Choice
Epleardum, myocardium, endocardium, pericardial cavity, parietal pericardium, fibrous
pericardium Flbrous pericardium, parietal pericardium, pericardial covity, epicardium,
myocardlum, endocardium Myocardium, endocardium, epicardlum, fibrous pericardium,
pericardial cavity, parietal pericardium Endocardium, myocardium, epicardlum, pericardial
cavity, parietal pericardium, fibrous pericardium What is the normal pacemaker of the heart?
Multiple Choice AV bundle Purkinje fibers Sinoatrial node Atrioventricular node What is a
function of the systemic circuit? Multiple Choice It carries oxygen-rich blood to the heart. It
carries oxygen-rich blood from the lungs. It carries oxygen-poor blood to the tissues. It carries
oxygen-poor blood to the heart. What causes the T wave on an ECG? Multiple Choice
Repolarization of ventricular myocardium Depolarization of atrial myocardium Depolarization
of ventricular myocardium Repolarization of atrial myocardium Why is the cardiovascular
system vital to survival? Multiple Choice It delivers waste molecules to vital organs. It supplies
oxygen and nutrients to cells. It delivers carbon dioxide to tissues and removes excess oxygen. It
ensures that the lungs fully inflate. Why does fluid leave capillaries at their arteriolar end and
enter at the venular end? Mutiple Choice Hydrosaatic pressure is figher than osmote presure at
the menolar end and wwor at the venda end. Hydrostate prestwe is loner thas osmotic peessae at
the arterolar end end higher at the veruicr end. Blood flowing from the vena cavae to the
pulmonary trunk passes through what series of structures? Multiple Choice Right ventricle,
tricuspld valve, right atrium, pulmonary valve Right atrium, pulmonary valve, right ventricle,
tricuspid valve Right atrium, tricuspid valve, right ventricle, pulmonary valve Right ventricle,
pulmonary valve, ight atrium, tricuspid valve. What layer lines the chambers of the heart?
Multiple Cholce Epicardium Pericardium Endocardium Myocardium What causes the P wave on
an ECG? Multiple Choice Repolarization of atrial myocardium Repolarization of ventricular
myocardium Depolarization of ventricular myocardium Depolarization of atrial myocardium
What happens in the condition called mitral valve prolapse? Multiple Choice One or more cusps

2. bulge into the left atrium during ventricular contraction. One or more cusps bulge into the left
ventricle during ventricular relaxation. The mitral valve has hardened, narrowing the opening
into the ventricle. The cusps of the mitral valve become immovable.