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NUR 275 - MODULE VI EXAM QUESTIONS WITH VERIFIED ANSWERS
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NUR 275 - MODULE VI EXAM QUESTIONS WITH VERIFIEDANSWERS
What is the average weight of the heart (women)?
255 grams (9 oz).
What is the average weight of the heart (men)?
310 grams (10.9 oz).
Precordium.
Area of the chest wall overlying the heart and great vessels.
Where should the apical pulse be auscultated?
5th intercostal space.
Pulmonary Circulation.
The heart pumps the blood to the lungs for gas exchange.
Systemic Circulation.
The heart pumps blood to all other parts of the body.
Perfusion.
When blood flows to tissues and organs promoting the diffusion of oxygen and
carbon dioxide.
What are the four chambers of the heart?
The right and left atria and ventricles.
Atrioventricular Valves (Location).
The entrance to the ventricles (Between the atria and ventricles).
What are the two AV (atrioventricular) valves?
Tricuspid and bicuspid (mitral).
,Describe the tricuspid valve.
Composed of three cusps/flaps located between the right atrium and ventricle.
Describe the bicuspid (mitral) valve.
Composed of two cusps and is located between the left atrium and ventricle.
Chordae Tendineae.
Anchor the AV valve flaps to papillary muscles within the ventricles.
Semilunar Valves (Location).
Located at the exit of each ventricle at the beginning of the great vessels.
Pulmonic Valve.
Located at the entrance of the pulmonary artery as it exits the right ventricle.
Aortic Valve.
Located at the beginning of the ascending aorta as it exits the left ventricle.
Myocardium.
The thickets layer of the heart, made up of contractile cardiac muscle cells.
Endocardium.
A thin layer of endothelial tissue that forms the innermost layer of the heart.
Sinoatrial (SA) Node (Location).
Located on the posterior wall of the right atrium.
What is another term for the SA Node?
The pacemaker of the heart.
AV Node (Location).
Interatrial septum.
Ventricular Diastole.
, AV valves are open, and the ventricles are relaxed.
Atrial Systole.
The action raises left ventricular pressure.
What produces the first heart sound?
Closure of the AV valves (mitral and tricuspid).
What produces the second heart sound?
Closure of semilunar valves (aortic and pulmonic).
Murmurs.
Turbulent blood flow in which a swooshing or blowing sound may be auscultated
over the precordium.
Innocent Murmurs.
Not caused by a heart problem, patient doesn't have symptoms.
Pathological Murmurs.
Can be caused by age-related changes, heart/valve disease - patients can have
palpitation.
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