单项选择题

The blood-gas barrier in alveoli may include each of the following EXCEPT

A．cytoplasm of a type Ⅱpneumocyte
B．basal lamina of type Ⅰalveolar cells
C．cytoplasm of a type Ⅰpneumocyte
D．endothelium of a continuous capillary
E．basal lamina of an endothelial cell

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单项选择题Which of the following statements concerning adrenal parenchymal cells is TRUE

A．Those of the zona fasciculate produce androgens
B．Those of the adrenal medulla produce epinephrine and norepinephrine
C．Those of the zona glomerulosa produce glucocorticoids
D．Those of the cortex contain numerous secretory granules
E．Those of the adrenal medulla produce glucocorticoids

单项选择题Circulating antibodies are synthesized and secreted by which of the following cells

A．T memory cells
B．B memory cells
C．T helper cells
D．Plasma cells
E．T cytotoxic cells

单项选择题Which of the following statements concerning liver sinusoids is TRUE

A． They are continuous with bile canaliculi
B．They are surrounded by a well developed basal lamina
C．They are lined by nonfenestrated endothelial cells
D．They deliver blood to the central vein
E．They deliver blood to portal vein

单项选择题Which of the following statements concerning the pancreas is FALSE

A． It possesses islets of Langerhans
B．It possess serous demilunes
C．It contains more beta cells than alpha cells
D．It exhibits large, electron-lucent granules in its S cells.
E．Its acinar cells contain a round nucleus

单项选择题All of the following material can be absorbed directly by the surface absorptive cell of the intestines EXCEPT

A．water
B．monosaccharide
C．free fatty acids
D．ions
E．small peptides