Create an account
the layer of simple squamous epithelium that lines the inside of the myocardium is called
muscular wall of the left ventricle is thicker than the right wall because it
pumps blood to the entire body
the valve between the left ventricle and the blood vessel leaving the left ventricle is the
the blood vessel that collects deoxygenated blood of the coronary circulation and empties into the right atrium is the
death of an area of cardiac tissue due to an interrupted blood supply is called
myocardial infarction (MI)
which of the following represents the correct sequence of structures in the cardiac conduction system
SA node, AV node, bundle of HIS, Purkinje figers
the remaining 25% of the blood that fills the ventricles after the relaxation period occurs during
impulses carried by means of the vagus nerve are
parasympathetic impulses that decrease the heart rate
which of the following is/are risk factor(s) for the development of heart disease
high BP, diabetes mellitus, genetic disposition
when blood moves from atrium to a ventricle
the valve is pushed open, the papillary muscles relax, the corordae tendinae slacken
blood from which three vessels enters the right atrium
the superior and inferior vena cava and the coronary sinus
why is the right ventricle wall thinner than the left ventricle
the left ventricle has to pump blood further, if the right pumped as hard as the left, the lungs would burst
the increase in blood pressure during exercise could
cause unstable plaque in a blood vessel to rupture triggering the clotting process
during strenuous exercise, a well trained athlete can achieve a cardiac output _____ that of a sedentary person
the 'good' chemical that takes cholesterol to the liver for elimination is
LDL - low density lipoproteins
t/f The pericardium is actually 3 layers. The outer layer is the parietal pericardium that forms the rather
inelastic pericardial cavity around the heart. The middle is the visceral pericardium. The inner layer is
called either the fibrous pericardium if you are talking about pericardial coverings or epicardium if you
are talking about layers of the heart.
t/f in general, heart attack risk is low for those who exercise regularly and higher for those who do not
t/f ischemia, hypoxia, angina pectoris and myocardial infarction all result from a lack of O2 to the heart tissue
t/f the beginning of an atherosclerotic plaque is a fatty streak formed from macrophages eating LDL particles and T-cells
t/f silent myocardial ischemia is reduced blood flow to the heart tissue without any pain or forewarning
t/f valvular stenosis a combination of 4 defects including the aorta emerging from both ventricles
the spread of action potential through the ventricles is recorded as the _______ wave of an ECG
the specialized tissue capable of conducting action potentials and allowing the heart to beat without direct stimulus from the nervous system is the
the _________ law of the heart explains the relationship between the stretching of the ventricular wall and the contraction stregth
a procedure that is used to visualize the coronary arteries, chambers, valves and great vessels is
the neurotransmitter released by the sympathetic fibers that increase the rate of the heartbeat is
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together