Concerning the descriptions of thoracic duct, which one of following statements is correct_____? ()
A. it ascends behind the esophagus
B. it is formed by the union of right and left lumbar trunk
C. it is formed by the union of right and left intestinal trunk
D. it receives lymph about 1/4 of the whole body
E. it is formed by the union of right and left jugular trunk
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By the____, the left ventricle can be divided into the inflow tract and the outflow tract.()
A. crista terminalis
B. anterior leaflet of tricuspid valve
C. posterior leaflet of mitral valve
D. anterior leaflet of the mitral valve
E. interventricular crest
The fossa ovalis is found in_____.()
A. left atrium
B. right atrium
C. left ventricle
D. right ventricle
E. right auricle
Which one of the following structures is the vascular tunic of the eyeball?()
A. retina
B. cornea
C. iris
D. lens
E. sclera
The carotid wall is the _____ wall of the tympanic cavity of middle ear()
A. anterior
B. posterior
C. superior
D. inferior
E. lateral
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