,
,TEST BANK
, Question 1
Where is the heart primarily located within the thoracic cavity?
A. In the right pleural cavity, lateral to the right lung B. In the
mediastinum, between the lungs and behind the sternum C. In the
abdominal cavity, below the diaphragm D. In the posterior
mediastinum, behind the esophagus
Correct Answer: B. In the mediastinum, between the lungs and behind
the sternum
Rationale: The heart is located primarily in the middle mediastinum,
between the lungs, posterior to the sternum, and superior to the
diaphragm. This position protects the heart within the thoracic cavity
while allowing it to pump blood throughout the body. Option A is
incorrect because the heart is not located within the right pleural cavity.
Option C is incorrect because the heart is in the thorax, not the
abdomen. Option D is incorrect because the heart is not located in the
posterior mediastinum; that region contains structures such as the
esophagus and descending thoracic aorta.
Question 2
Which chamber receives oxygen-poor blood returning from the
systemic circulation through the superior vena cava, inferior vena cava,
and coronary sinus?
A. Left atrium B. Left ventricle C. Right atrium D. Right ventricle
Correct Answer: C. Right atrium
Rationale: The right atrium receives oxygen-poor blood from the
superior vena cava, inferior vena cava, and coronary sinus. The blood
,TEST BANK
, Question 1
Where is the heart primarily located within the thoracic cavity?
A. In the right pleural cavity, lateral to the right lung B. In the
mediastinum, between the lungs and behind the sternum C. In the
abdominal cavity, below the diaphragm D. In the posterior
mediastinum, behind the esophagus
Correct Answer: B. In the mediastinum, between the lungs and behind
the sternum
Rationale: The heart is located primarily in the middle mediastinum,
between the lungs, posterior to the sternum, and superior to the
diaphragm. This position protects the heart within the thoracic cavity
while allowing it to pump blood throughout the body. Option A is
incorrect because the heart is not located within the right pleural cavity.
Option C is incorrect because the heart is in the thorax, not the
abdomen. Option D is incorrect because the heart is not located in the
posterior mediastinum; that region contains structures such as the
esophagus and descending thoracic aorta.
Question 2
Which chamber receives oxygen-poor blood returning from the
systemic circulation through the superior vena cava, inferior vena cava,
and coronary sinus?
A. Left atrium B. Left ventricle C. Right atrium D. Right ventricle
Correct Answer: C. Right atrium
Rationale: The right atrium receives oxygen-poor blood from the
superior vena cava, inferior vena cava, and coronary sinus. The blood
