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Anatomy Ch 14 Heart
The Heart
39
Anatomy
Not Applicable
09/12/2010

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Cards

Term
The Purkinji fibres are located in the interatrial septum T or F
Definition
false
Term
S1 or lub is caused when the atrioventricular valves close T or F
Definition
true
Term
Blood enters into the l atrium from the pulmonary vein T or F
Definition
true
Term
The pacemaker of the heart is the
Definition
SA node
Term
The fibrous outer layer of the pericardium anchors the heart in place T or F
Definition
True
Term
Recieves oxygenated blood from the lungs
Definition
left atrium
Term
sends deoxygenated blood to the lungs
Definition
right ventricle
Term
recieves deoxygenated blood from the body
Definition
right atrium
Term
sends deoxygenated to the body
Definition
left ventricle
Term
one complete cycle of heart contraction & relaxation is called the the
Definition
cardiac cycle
Term
The three layers of the heart are the
Definition
endocardium, epicardium, myocardium
Term
The amount of blood thar is pumped by each ventricle in 1 minute is called
Definition
cardiac output
Term
The two valves that are known as the entrance valves are called the
Definition
mitral valve & tricuspid valve
Term
____ ____generates the electrical impulse that starts the heart beat
Definition
SA node
Term
The main arteries that supply the blood to the heart muscle are the right & left _____ ______
Definition
coronary arteries
Term
The epicardium is also the _____of the pericardium
Definition
visceral
Term
the interatrial septum & the interventricular septum are comprised of
Definition
muscle
Term
The function of these threads, callede the ______ _______is to stabilize the valve flaps when the ventricles contract so that the force of the blood will not push them up into the atria
Definition
chordae tendineae
Term
The____is a thin smooth layer of epithelia cells that line the hearts interior
Definition
endocardium
Term
A____heart rhythm originating in the SA node is termed sinus rhythm
Definition
normal
Term
An artery is a vessel that takes blood from the ____to the tissues
Definition
heart
Term
The____side pumps low in oxygen blood to the lungs through the pulmonary circuit
Definition
right
Term
The aortic valve is a ______ valve located between left ventricle and the aorta
Definition
semilunar
Term
A thin film of fluid between the parietal and visceral layers of the ___ ____reduces friction as the heart moves
Definition
pericardial sac
Term
The right atrioventricular valve is also known as the _____valve because it has 3 cusps that open & close
Definition
tricuspid
Term
Only the ____comes in contact with the blood that flows through the heart chambers
Definition
endocardium
Term
Fibers travel first down both sides of the interventricular septum in groups called the right & left____ ______
Definition
bundle branches
Term
Sympathetic nervous system stimulation___the heart rate
Definition
increases
Term
____ ____is the volume of blood ejected from the ventricle with each beat
Definition
stroke volume
Term
The P wave represents the ____contracting
Definition
atrium
Term
the QRS represents the ventricle _____
Definition
contracting
Term
The T represents the ventricle _____
Definition
relaxing
Term
____is the inner layer of the heart wall
Definition
endocardium
Term
_____is the middle muscle of the heart
Definition
myocardium
Term
myocardium is the ____layer of the heart
Definition
Term
____is the outer layer of the heart
Definition
pericardium
Term
visceral pericardium is also known as _____
Definition
epicardium
Term
epicardium is the ___of the heart
Definition
surface
Term
____fluid fills the space between the visceral and parietal pericardium
Definition
pericardial fluid
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