Which is not correct about erythrocytes? ()
A. biconvex discs
B. 7.5μm in diameter
C. quite flexible
D. no nucleus,no organelles
E. rich in hemoglobin
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Isogenous group is ()
A. seen at periphery of cartilage
B. seen at periphery of bone
C. a group of chondrocytes within a single lacuna
D. a single chondrocyte within one lacuna
E. a group of immature flattened chondrocytes
Which is not correct about collagenous fibers? ()
A. They are termed white fibers.
B. Collagenous fibers are composed of collagenⅠand Ⅱ.
Collagenous fibers consist of collagenous fibrils.
D. It also shows periodic cross-bandings .
E. In an HE preparation, the fibers are acidophilic and stain weakly pink.
Which is not correct about fibroblast ? ()
A. The active fibroblast has an abundant and irregularly branched cytoplasm
B. The Golgi complex is well developed
C. It is rich in smooth endoplasmic reticulum
D. Fibroblasts can synthesize fibers and ground substance
E. During wound healing, the fibrocyte become the fibroblast
Specializations at lateral surfaces of epithelium are ()
A. tight junction
B. microvillus
C. basement membrane
D. hemidesmosome
E. cilium
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