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