,
,TEST BANK
, Question 1
Which statement best describes the location of the heart within the
thoracic cavity?
A. It lies entirely within the right pleural cavity. B. It lies in the
mediastinum between the lungs, behind the sternum. C. It lies within
the abdominal cavity beneath the diaphragm. D. It lies entirely within
the left pleural cavity.
Correct Answer:
B. It lies in the mediastinum between the lungs, behind the sternum.
Rationale:
The heart is located in the mediastinum, between the lungs and
posterior to the sternum, with much of its mass extending to the left of
the midline. Option A is incorrect because the heart is not confined to
the right pleural cavity. Option C is incorrect because the heart is
located in the thorax, although its inferior surface rests on the
diaphragm. Option D is incorrect because the heart lies centrally within
the mediastinum rather than entirely within the left pleural cavity.
Question 2
Which chamber receives oxygenated blood returning from the lungs?
A. Right atrium B. Right ventricle C. Left atrium D. Left ventricle
Correct Answer:
C. Left atrium
Rationale:
,TEST BANK
, Question 1
Which statement best describes the location of the heart within the
thoracic cavity?
A. It lies entirely within the right pleural cavity. B. It lies in the
mediastinum between the lungs, behind the sternum. C. It lies within
the abdominal cavity beneath the diaphragm. D. It lies entirely within
the left pleural cavity.
Correct Answer:
B. It lies in the mediastinum between the lungs, behind the sternum.
Rationale:
The heart is located in the mediastinum, between the lungs and
posterior to the sternum, with much of its mass extending to the left of
the midline. Option A is incorrect because the heart is not confined to
the right pleural cavity. Option C is incorrect because the heart is
located in the thorax, although its inferior surface rests on the
diaphragm. Option D is incorrect because the heart lies centrally within
the mediastinum rather than entirely within the left pleural cavity.
Question 2
Which chamber receives oxygenated blood returning from the lungs?
A. Right atrium B. Right ventricle C. Left atrium D. Left ventricle
Correct Answer:
C. Left atrium
Rationale:
