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Multiple Choice
A) The four heart chambers first develop during the third trimester.
B) The heart begins as a pair of tubes in the midline of the thorax.
C) The heart develops from mesodermal mesenchyme.
D) The two atria are connected by a foramen ovale until birth.
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Multiple Choice
A) mitral valve
B) pulmonary semilunar valve
C) aortic semilunar valve
D) fossa ovalis
E) atrioventricular bundle
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Multiple Choice
A) circumflex artery
B) left anterior descending artery
C) marginal artery
D) posterior descending artery
E) pulmonary artery
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Multiple Choice
A) right atrium
B) right ventricle
C) left ventricle
D) left atrium
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Short Answer
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Multiple Choice
A) second intercostal space to the right of the sternum.
B) second intercostal space to the left of the sternum.
C) fifth intercostal space inferior to the left nipple.
D) fifth right intercostal space.
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Multiple Choice
A) cardiac tamponade
B) congestive heart failure
C) heart block
D) myocardial infarction
E) hypertrophic cardiomyopathy
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Multiple Choice
A) atrioventricular bundle
B) bundle branch
C) internodal pathway
D) sinoatrial node
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Multiple Choice
A) the aorta
B) the pulmonary vein
C) the pulmonary trunk
D) the superior vena cava
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Multiple Choice
A) A
B) B
C) C
D) D
E) E
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Multiple Choice
A) trabeculae carneae
B) pectinate muscles
C) crista terminalis
D) papillary muscles
E) atrioventricular bundle
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Short Answer
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Essay
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Short Answer
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Multiple Choice
A) excess fluid in the pericardial cavity.
B) pericardial friction rub.
C) adhesions.
D) a myocardial infarction.
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Multiple Choice
A) are larger and have fewer myofilaments than other cardiac cells.
B) are nonconducting cells that electrically insulate the bundle branches of the interventricular septum.
C) are pacemaker cells located in the SA node that initiate each heartbeat.
D) are sensory cells that monitor the stretch of the myocardium to prevent overexpansion by high blood pressure.
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