flap-like lateral wall of each atrium is called the
auricle
the _________ valve is also known as the mitral or left AV valve
bicuspid
the right AV valve is also known as the what valve?
tricuspid
aortic semilunar valve has how many pocketlike flaps of tissue?
3
___________ are fibrous structures that prevent the cuspid valves from prolapsing
chordae tubernae
mitral valve prolapse, which is abnormal, may allow blood to enter the ________ during contraction of the left ventricle
left atrium
one-way flow of blood from the right ventricle is ensured by the presence of the _________________ valve
pulmonary SL valve
small cardiac vein and right coronary artery can be found along the right ______ __________ sulcus
atrial ventricular
great cardiac vein and anterior interventricular artery can be found along the anterior ______________________ sulcus
interventricular
____________________ is a muscular wall between the left and right ventricles
interventricular septum
myocardium of the _______ ventricle is thicker than the other ventricles
left
wall of the aorta is thicker or thinner than the wall of the superior vena cava?
thicker
beamlike processes of the inner face of the myocardium
traberculae
point of the heart is called
apex
which have valves? arteries or veins
veins
t or f. internal layer of the tissue in the heart is the epicardium
false; endocardium
t or f. mitral valve has three flaps
false; 2
t or f. receiving chambers of the heart are the atria.
true
t or f. anteriorly, the heart sits between the points of attachment of the 7th-9th ribs.
false
t or f. left ventricle is the driving pump for systemic circulation.
true
t or f. chordae tendineae are cordlike structures that connect semilunar valves to papillary muscles.
false, connect cusps of AV valves
t or f. blood flow from the pulmonary arteries leads to the lungs
true
saclike structures around the heart:
pericardium
another name for the visceral layer of the pericardium?
epicardium
valve that guards the left atrioventricular orifice is called the
bicuspid and mitral
right AV valve is known as:
tricuspid
which of the following is not an atrioventricular valve?
aortic, mitral, bicuspid, tricuspid
aortic
which the following is a semilunar valve?
aortic, mitral, tricuspid, bicuspid
aortic
cavity of the heart that normally has the thickest wall?
left ventricle
if this valve were damaged, it could allow blood to leak back into the right atrium
tricuspid
if this valve were damaged, it would allow blood to leak back into the left ventricle
aortic semilunar valve
which of the following vessels carries blood from the lungs to the heart?
pulmonary vein
t or f. tunica intima of arteries is the middle layer of the artery wall.
false
t or f. precapillary sphincters are located in venules.
false
t or f. capacitance is a characteristic of veins
true
t or f. veins get smaller as they get closer to the heart.
false
t or f. the ECG measures the electrical activity of the heart.
true
t or f. the u wave appears prior to the T wave on an ECG.
false
t or f. during a normal ECG, the tracing should never go below the zero mark of the graph.
false
t or f. pacemaker of the heart is the SA node
true
t or f. pacemaker cells in the heart possess intrinsic rhythm
true
t or f. as the action potential enters the AV node, the speed of conduction increases to stimulate ventricular contraction
false
which of the following vessels do not have the ability to constrict and dilate?
capillaries
both tunica media and tunica adventitia are absent in:
capillaries
what acts as blood reservoirs?
veins
order of blood flow through the vessel?
arteries, arterioles, capillaries, venules, and veins
what accurately describes what is measured by an ECG?
electrical conductivity
QRS complex represents:
repolarization of the atria and depolarization of the ventricles
what is true regarding the pulse?
it gets stronger as you get closer to the heart
on an ECG, the T wave represents:
repolarization of the ventricles
which of the following structures is part of the conduction system of the heart?
SA node, AV node, AV bundle
form when there is a blockage in a coronary artery, so they create a detour for the blood to follow to ensure that it gets to its final destination
anastomoses
site in the heart that develops abnormal self-excitability and becomes a pacemaker
ectopic pacemaker
smallest size veins
venules
regulate flow through capillaries
precapillary sphincters
3 factors that determine arterial pressure:
cardiac output
peripheral resistance
diameter of arterioles
name of the device used to measure blood pressure
sphygmomanometer
how many pulmonary veins?
4
pulmonary arteries carry oxygenated or deoxygenated blood?
deoxygenated
most commonly caused by chronic systemic hypertension and results in hypertrophy of the left ventricle
congestive heart failure
results in a dramatic increase in myocardial tissue, it is a genetic condiction that may cause sudden heart failure without any warning symptoms. it is the cause of sudden, unexplained death in young athletes
hypertrophicmyocardiopathy