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A 32-year-old patient who weighs 275 lb comes to the doctors office. On the surface of the chest, the physician is able to locate the apex of the heart:
(A) At the level of the sternal angle
(B) In the left fourth intercostal space
(C) In the left fifth intercostal space
(D) In the right fifth intercostal space
(E) At the level of the xiphoid process of the sternum
c. In the left fifth intercostal space
A 43-year-old female patient has been lying down on the hospital bed for more than 4 months. Her normal, quiet expiration is achieved by contraction of which of the following structures?
(A) Elastic tissue in the lungs and thoracic wall
(B) Serratus posterior superior muscles
(C) Pectoralis minor muscles
(D) Serratus anterior muscles
A. Elastic tissue in the lungs and thoracic wall
A 27-year-old cardiac patient with an irregular heartbeat visits her doctor's office for examination. Where should the physician place the stethoscope to listen to the sound of the mitral valve?
(A) Over the medial end of the second left intercostal space
(B) Over the medial end of the second right intercostal space
(C) In the left fourth intercostal space at the midclavicular line
(D) In the left fifth intercostal space at the midclavicular line
(E) Over the right half of the lower end of the body of the sternum
D. In the left fifth intercoastal space at the midclavicular line
A 19-year-old man came to the emergency department, and his angiogram exhibited that he was bleeding from the vein that is accompanied by the posterior interventricular artery. Which of the following veins is most likely to be ruptured?
(A) Great cardiac vein
(B) Middle cardiac vein
(C) Anterior cardiac vein
(D) Small cardiac vein
(E) Oblique veins of the left atrium
B. Middle cardiac vein
A 37-year-old patient with palpitation was examined by her physician, and one of the diagnostic records included a posterior-anterior chest radiograph. Which of the following comprises the largest portion of the sternocostal surface of the heart seen on the radiograph?
(A) Left atrium
(B) Right atrium
(C) Left ventricle
(D) Right ventricle
(E) Base of the heart
B. Right ventricle
A 7-year-old boy has a damaged interventricular septum.
Which of the following valves is most likely defective?
(A) Pulmonary valve
(B) Mitral valve
(C) Valve of coronary sinus
(D) Tricuspid valve
(E) Aortic valve
(D) Tricuspid valve
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