The lub-dup heart sounds heard during auscultation of the heart are associated with:
SA node
heart valves opening
blood flowing from atria to ventricles
heart valves closing
heart valves closing
All of these structures can be identified in the ventricles EXCEPT:
trabeculae carneae
papillary muscles
pectinate muscles
chordae tendineae
pectinate muscles
Blood being pumped out of the left ventricle enters the:
coronary sinus
venae cavae
pulmonary artery
aorta
aorta
Deoxygenated blood from the myocardium enters the right atrium through the:
cardiac veins
coronary arteries
coronary sinus
superior vena cava
coronary sinus
Nerve impulses are directly supplied to the papillary muscles by the:
AV node
Purkinje Fibers
bundle of His
SA node
Purkinje Fibers
Blood is prevented from flowing back into the left ventricle by the:
mitral valve
tricuspid valve
aortic semilunar valve
pulmonary semilunar valve
aortic semilunar valve
These structures prevent prolapse of the AV valves
chordae tendineae
Atrial repolarization occurs during this period of time, seen on an EKG
QRS complex
P wave
S-T segment
T wave
QRS complex
The amount of blood pumped out of each ventricle in one minute is called:
stroke volume
cardiac output
cardiac reserve
end diastolic volume
cardiac output
Blood flow during ventricular filling is most dependent upon _________
pressure changes
pumping actions
thyroxine (T4)
bundle of His
pressure changes