(Comprehensive Review for Clinical and Exam Prep) WITH MOST
TESTED QUESTIONS
1. Which of the following statements regarding the thorax is correct?
A) The thoracic cavity extends to the ninth or tenth rib posteriorly.
B) The diaphragm inserts into the anterior thoracic cage below the fifth rib.
C) The dimensions of the thorax are defined inferiorly by the thoracic inlet.
D) The dimensions of the thorax are defined anteriorly by the thoracic vertebrae. -
ANSWER****B) The diaphragm inserts into the anterior thoracic cage below the fifth rib.
2. Bony structures of the thorax include all of the following, EXCEPT the:
A) ribs.
B) scapulae.
C) clavicles.
D) acromion - ANSWER****D) acromion
3. The eighth, ninth, and tenth ribs are indirectly attached to the sternum by the:
A) manubrium.
B) angle of Louis.
C) costal cartilage.
D) suprasternal notch. - ANSWER****C) costal cartilage.
4. The eleventh and twelfth ribs are known as the floating ribs because they:
A) are not attached anteriorly to the sternum.
B) are not connected to any bony structures.
C) do not have a posterior point of attachment.
,D) are attached to the sternum only by cartilage. - ANSWER****A) are not attached anteriorly
to the sternum.
5. The space between the second and third ribs is called the:
A) third intercostal space.
B) intrathoracic margin.
C) second intercostal space.
D) second subcostal margin - ANSWER****C) second intercostal space.
6. Which of the following is NOT a mediastinal structure?
A) Lung
B) Trachea
C) Esophagus
D) Mainstem bronchi - ANSWER****A) Lung
7. The visceral pericardial layer:
A) comprises the pericardial sac itself.
B) is attached directly to the diaphragm.
C) is the outermost layer of the pericardium.
D) adheres to the heart and forms the epicardium. - ANSWER****D) adheres to the heart and
forms the epicardium.
8. The anterior-most portion of the heart is the:
A) left ventricle.
B) right ventricle.
C) right atrium.
, D) left atrium. - ANSWER****B) right ventricle.
9. The pressure within the right ventricle is:
A) less than the pressure within the right atrium.
B) one fourth of the pressure within the left ventricle.
C) nearly equal to the pressure within the left ventricle.
D) three times greater than the pressure in the left ventricle. - ANSWER****B) one fourth of
the pressure within the left ventricle.
10. Most of the heart is protected:
A) by the anterior rib cage.
B) by the tough pericardium.
C) anteriorly by the sternum.
D) by the sternal manubrium. - ANSWER****C) anteriorly by the sternum.
11. What is the cardiac output for an 80-kg man who has a heart rate of 80 beats/min and a
stroke volume of 60 mL?
A) 4,800 mL
B) 5,200 mL
C) 6,000 mL
D) 6,400 mL - ANSWER****A) 4,800 mL
12. As soon as the aorta exits the left ventricle, it:
A) descends toward the abdomen.
B) branches into the femoral arteries.
C) becomes the brachiocephalic artery.