Chap 15 Flashcards
Cardiovascular
Blood vessels called__________ carry blood toward the heart, and__________ carry blood
away from the heart.
A) veins; arteries
B) arteries; veins
C) capillaries; arteries
D) veins; capillaries
A) veins; arteries
Why is the cardiovascular system vital to survival?
A) It supplies oxygen and nutrients to cells.
B) It ensures that the lungs fully inflate.
C) It delivers carbon dioxide to tissues and removes excess oxygen.
D) It delivers waste molecules to vital organs.
A) It supplies oxygen and nutrients to cells.
What is a function of the pulmonary circuit?
A) It carries oxygen-poor blood to the heart.
B) It carries oxygen-poor blood to the tissues.
C) It carries oxygen-poor blood to the lungs.
D) It carries oxygen-poor blood from the tissues.
C) It carries oxygen-poor blood to the lungs.
What is a function of the systemic circuit?
A) It carries oxygen-rich blood to the heart.
B) It carries oxygen-poor blood to the tissues.
C) It carries oxygen-rich blood from the lungs.
D) It carries oxygen-poor blood to the heart.
D) It carries oxygen-poor blood to the heart.
Name the tough outermost layer of the sac that surrounds the heart.
A) Fibrous pericardium
B) Visceral pericardium
C) Epicardium
D) Endocardium
A) Fibrous pericardium
Blood flowing from the vena cavae to the pulmonary trunk passes through what series of
structures?
A) Right atrium, pulmonary valve, right ventricle, tricuspid valve
B) Right atrium, tricuspid valve, right ventricle, pulmonary valve
C) Right ventricle, tricuspid valve, right atrium, pulmonary valve
D) Right ventricle, pulmonary valve, right atrium, tricuspid valve
B) Right atrium, tricuspid valve, right ventricle, pulmonary valve
What layer lines the chambers of the heart?
A) Epicardium
B) Myocardium
C) Endocardium
D) Pericardium
C) Endocardium
29) Blood entering the right atrium comes from what structure(s)?
A) Pulmonary trunk
B) Venae cavae and coronary sinus
C) Pulmonary veins
D) Right ventricle
B) Venae cavae and coronary sinus
33) What chambers of the heart will contain oxygen-poor blood?
A) Right atrium and right ventricle
B) Right atrium and left atrium
C) Left atrium and left ventricle
D) Left atrium and right ventricle
A) Right atrium and right ventricle
Which valve is located between the left atrium and left ventricle?
A) Tricuspid valve
B) Pulmonary valve
C) Mitral valve
D) Aortic valve
C) Mitral valve
37) What is the correct sequence of components of the cardiac conduction system?
A) AV node → SA node → Purkinje fibers→ AV bundle
B) AV node → AV bundle → Purkinje fibers → SA node
C) SA node → Purkinje fibers → AV node → AV bundle
D) SA node → AV node → AV bundle → Purkinje fibers
D) SA node → AV node → AV bundle → Purkinje fibers
What is the normal pacemaker of the heart?
A) Purkinje fibers
B) AV bundle
C) Sinoatrial node
D) Atrioventricular node
C) Sinoatrial node
47) What term refers to an abnormally slow heart rate?
A) Tachycardia
B) Bradycardia
C) Fibrillation
D) Infarction
B) Bradycardia
What type of arrhythmia is most life threatening?
A) Atrial flutter
B) Ventricular flutter
C) Atrial fibrillation
D) Ventricular fibrillation
D) Ventricular fibrillation
What blood vessels hold the greatest volume of blood?
A) Arteries
B) Arterioles
C) Capillaries
D) Veins
D) Veins
What is described by the Frank-Starling law of the heart?
A) That the SA node will act as the pacemaker
B) That the quantity of blood that enters the heart equals the quantity that is pumped out
C) That blood will only flow through the coronary circulation during diastole
D) That cardiac output is equal to heart rate times stroke volume
B) That the quantity of blood that enters the heart equals the quantity that is pumped out
66) How is stroke volume calculated?
A) SV = HR x BP
B) SV = EDV - ESV
C) SV = BP x PR
D) SV = CO x PR
B) SV = EDV - ESV
How is pulse pressure calculated?
A) PP = systolic pressure - diastolic pressure
B) PP = systolic pressure x diastolic pressure
C) PP = systolic pressure + diastolic pressure
D) PP = systolic pressure / diastolic pressure
A) PP = systolic pressure - diastolic pressure
The pulmonary trunk divides into what two vessels?
A) Left and right pulmonary arteries
B) Left and right pulmonary veins
C) Superior and inferior venae cavae
D) Ascending and descending aorta
A) Left and right pulmonary arteries
Name two branches of the right coronary artery.
A) Posterior interventricular artery and right marginal branch
B) Anterior interventricular artery and circumflex branch
C) Anterior interventricular artery and posterior interventricular artery
D) Right marginal branch and circumflex branch
A) Posterior interventricular artery and right marginal branch
Valves help to ensure one-way blood flow in the__________.
A) arteries and veins
B) heart and veins
C) heart and arteries
D) capillaries
B) heart and veins
What causes the first heart sound? When does this occur?
A) Closure of the semilunar valves at the beginning of ventricular diastole
B) Closure of the atrioventricular valves soon after the beginning of ventricular systole
C) Closure of the semilunar valves soon after the beginning of ventricular systole
D) Closure of the atrioventricular valves at the beginning of ventricular diastole
B) Closure of the atrioventricular valves soon after the beginning of ventricular systole
What occurs in arteries that results in the disease called atherosclerosis?
A) Holes slowly develop in the vessel walls.
B) Sustained smooth muscle contraction causes reduced lumen size.
C) Plaques containing cholesterol and other fats accumulate in the vessel walls.
D) Valves become inflammed and eventually stiffen and become nonfunctional.
C) Plaques containing cholesterol and other fats accumulate in the vessel walls.
Where would oxygen-poor blood be found?
A) Pulmonary arteries and systemic veins
B) Pulmonary veins and systemic arteries
C) Pulmonary arteries and systemic arteries
D) Pulmonary veins and systemic veins
A) Pulmonary arteries and systemic veins
