Chapter 8 - Cardiovascular System
Which pathway represents the pulmonary circuit?
right ventricle → pulmonary arteries → lungs → pulmonary veins → left atrium
right ventricle → pulmonary veins → lungs → pulmonary arteries → left atrium
left ventricle → pulmonary arteries → lungs → pulmonary veins → right atrium
left ventricle → pulmonary veins → lungs → pulmonary arteries → right atrium
Which pathway represents the systemic circuit?
left ventricle → systemic arteries → body → systemic veins → right atrium
left ventricle → systemic veins → body → systemic arteries → right atrium
right ventricle → systemic arteries → body → systemic veins → left atrium
right ventricle → systemic veins → body → systemic arteries → left atrium
These terms all refer to the same value that permits blood flow from the left atrium to the left ventrical, except?
tricuspid valve
bicuspid valve
left atrioventricular valve (AV)
mitral valve
The base of the heart is inferior and the apex of the heart is superior?
true
false
Which statement is incorrect?
right atrium receives blood from the inferior and superior vena cava
blood flows from right atrium to right ventricle via the tricuspid valve
right atrium receives blood from left and right pulmonary veins
blood flows from left atrium to left ventricle via the bicuspid valve
Atrioventricular (AV) valves prevent backflow into the atria, and semilunar valves prevent backflow into the ventricles?
true
false
Which statement about an ECG is incorrect?
P wave: atria depolarize
T wave: ventricles repolarize
QRS complex: atria depolarize
QRS complex: ventricles depolarize
Blood enters the right atrium though the __________, and blood enters the left atrium though the __________?
vena cava, pulmonary veins
pulmonary veins, vena cava
mitral value, tricuspid value
tricuspid value, mitral value
Order the layers of the heart from deep to superficial.
endocardium → myocardium → pericardium (epicardium)
pericardium (epicardium) → myocardium → endocardium
myocardium → endocardium → pericardium (epicardium)
pericardium (epicardium) → endocardium → myocardium
Excess fluid in pericardial cavity is called __________ and can lead to cardiac tamponade (restricted movement of the heart).
pericarditis
myocardial infarction
angina pectoris
coronary artery disease
Semilunar valves include the following which prevent backflow into the ventricles.
pulmonary and aortic valves
tricuspid and mitral valves
There is one pulmonary vein and one pulmonary artery?
true
false
The right coronary artery supplies blood to all but?
left atrium
right ventricle
left ventricle
right atrium
conducting system
In a myocardial infarction, circulation becomes blocked in which of the following?
coronary circulation
systemic circuit
pulmonary circuit
During one heartbeat, the contraction phase is __________, and the relaxation phase is __________ ?
systole, diastole
diastole, systole
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