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【单选题】
The accelerated erythrocyte sedimentation rate was caused by( )
A.
Haematocytosis
B.
Swelling of red blood cells
C.
Shrinkage of red blood cells
D.
Rupture of red blood cells
E.
Erythrocyte agglutination
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【判断题】在明显突起的黏膜上,环形切除阻生牙表面覆盖的黏骨膜、牙槽骨和周围的牙囊暴露牙冠是指闭合式导萌,也叫环切导萌。( )
A.
正确
B.
错误
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【单选题】The physiologic function of the relatively slow conduction through the atrioventricular node is to allow sufficient time for( )
A.
Repolarization of the ventricles
B.
Venous return to the atria
C.
Contraction of the ventricles
D.
Runoff of blood from the aorta to the arteries
E.
Filling of the ventricles
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【单选题】Name the structure of the nephron that reabsorbs the most substances.( )
A.
Collecting duct
B.
Distal convoluted tubule
C.
Proximal convoluted tubule
D.
Glomerular capsule
E.
Loop of Henle
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【单选题】The food with the most significant special dynamic effect is( )
A.
Dietary fiber
B.
Protein
C.
Fat
D.
Sugar
E.
Inorganic salt
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【单选题】The main components of nerve cell action potential are( )
A.
Negative after-potential
B.
Local potential
C.
Positive after-potential
D.
Peak potential
E.
Threshold potential
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【单选题】In the refraction system of the eye, the interface with the greatest refraction ability is( )
A.
Vitreo-retinal interface
B.
Posterior corneal surface -- aqueous humor
C.
Air -- anterior surface of cornea
D.
Posterior surface of lens -- vitreous body
E.
Aqueous humor -- anterior lens surface
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【单选题】The components involving in the formation of the mucus-bicarbonate barrier are( )
A.
H
+
B.
Na
+
C.
C l
-
D.
HCO
3
-
E.
K
+
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【单选题】Which of the following will decrease the rate of oxygen transfer between the alveolar air and the pulmonary capillary blood?( )
A.
Decreasing the mixed venous oxygen tension from 40 to 10 mmHg
B.
Destruction of alveolar septa and pulmonary capillaries by a disease known as alveolar emphysema
C.
Perfusing previously unperfused pulmonary capillaries
D.
None of the above
E.
Increasing PO
2
in the alveoli from 100 to 500 mmHg
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【单选题】The important raw material for hemoglobin synthesis during erythropoiesis is( )
A.
Erythropoietin
B.
Folic acid and vitamin B
12
C.
Intrinsic factor
D.
Protein and iron
E.
Androgen
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【单选题】The proximal convoluted tubules reabsorb how much percentage of filtered water?( )
A.
40%
B.
50%
C.
25%
D.
90%
E.
65%
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