A patient has been diagnosed with mild heart disease. Tests show that some of the coronary arteries are partially occluded. Which of the following is the best course of action to treat the disease?
A.
Angioplasty
B.
Coronary bypass surgery
C.
Electrocardiogram
D.
Tissue plasminogen activation
E.
Angiogram
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Question 2) All of the following structural changes found in the heart occur with the normal aging process, except ___________________.
A.
hypertrophy of the left ventricle
B.
decreased elasticity of large vessels
C.
decreased valve flexibility
D.
increased elasticity of large vessels
E.
atrophy of conduction cells
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Question 3) Under resting conditions, the normal stroke volume is approximately ___________.
A.
55 mL
B.
70 mL
C.
110 mL
D.
125 mL
E.
180 mL
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Question 4) Where is blood moving during the period of ejection?
A.
Ventricles to atria
B.
Ventricles to great vessels
C.
Atria to ventricles
D.
Atria to great vessels
E.
Great vessels to ventricles
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Question 5) The ion primarily responsible for depolarization in pacemaker cells is ______________, whereas the ion primarily responsible for this in other cardiac cells is _____________.
A.
sodium; calcium
B.
calcium; sodium
C.
potassium; sodium
D.
calcium; potassium
(
Question 6) Small changes in _____________ will have a large impact on the heart's pumping effectiveness, while large changes in ___________ do not impact the effectiveness much.
A.
afterload; preload
B.
preload; afterload
C.
contractility; preload
D.
afterload; contractility
E.
contractility; afterload
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Question 7) All of the following cardiac measurements will increase during exercise except ____________________.
A.
end-diastolic volume
B.
end-systolic volume
C.
stroke volume
D.
cardiac output
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Question 8) What must occur during exercise to ensure adequate oxygen delivery to cardiac muscle?
A.
There must be increased oxygen release to cardiac muscle
B.
There must be decreased oxygen content to skeletal muscle
C.
There must be a decreased heart rate
D.
There must be increased coronary blood flow
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Question 9) The inner lining of the pericardial cavity is the ____________ pericardium, whereas the outer part of the heart wall is called the epicardium or the _______________ pericardium.
A.
fibrous; parietal
B.
visceral; fibrous
C.
parietal; visceral
D.
visceral; parietal
E.
fibrous; visceral
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Question 10) All of the following characteristics of the sarcoplasmic reticulum in cardiac muscle cells are true except ________________.
A.
it is more irregular than that in skeletal muscle cells.
B.
it is in close association wit the transverse tubules.
C.
it is involved in the storage and release of calcium
D.
it has enlarged terminal cisternae like skeletal muscle cells.
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