Which of the following is true of the pulmonary alveoli()
A: Present in all segments of the respiratory portion of the lung
B: Site for gaseous exchange
C: Lined by single layer of alveolar cells with type II cells being
more numerous than type I cells
D: Alveolar pores promote the collateral circulation of air when a
bronchiole is obstructed
E: Other choices are correct.
A: Present in all segments of the respiratory portion of the lung
B: Site for gaseous exchange
C: Lined by single layer of alveolar cells with type II cells being
more numerous than type I cells
D: Alveolar pores promote the collateral circulation of air when a
bronchiole is obstructed
E: Other choices are correct.
举一反三
- Which of the following descriptions are correct? A: Class I MHC present endogenous antigens to CD4+ T cells B: Class I MHC present endogenous antigens to CD8+ T cells C: Class II MHC present exogenous antigens to CD4+ T cells D: Class II MHC present exogenous antigens to CD8+ T cells
- When<br/>the lung is blood stasis, The macrophages that appear in the<br/>cytoplasm of the cytoplasm contain brown-yellow pigment particles are<br/>called() A: Dust<br/>cell B: Alveolar<br/>macrophage C: Foreign<br/>body giant cell D: Monocytes E: Heart<br/>failure cells
- Which of the following is NOT true of the alveolar sac() A: Directly communicates with the alveolar duct B: Has an interrupted wall represented by knobs between adjacent<br/>alveoli C: The space surrounded and opened by many alveoli D: Connective tissue fibers encircle the openings of the alveoli E: Smooth muscle disappears in this segment
- Which of the following cells possess the features of typical serous cells?() A: Parietal cells B: Chief cells C: Goblet cells D: Absorptive cells E: ECL cells
- 基底层细胞不断生长、增殖，形成所有其他表皮细胞。 A: The cells of basal layer keepgrowing and multiplying and formall the other epidermis cells. B: The cells in the basal layer are constantly growing and multiplying and give rise to all the other cells in the epidermis.