（）are called “white fibers”
A. Collagen fibers
B. Elastic fibers
C. Reticular fibers
D. nerve fibers
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The（）can divide the animal into two symmetrical parts
A. sagittal plane
B. midsagittal plane
C. frontal surface
D. cross section
The（）can divide the animal into two parts
A. sagittal plane
B. midsagittal plane
C. frontal surface
D. cross section
Monolayer cuboidal epithelium in（）
A. skin
B. renal tubules
C. respiratory tract
D. gastric mucosa
The epithelia distributed on pleura, peritoneum, pericardium and some organs are（）
A. single-layer cubic epithelium
B. single-layer columnar epithelium
C. simple squamous epithelium
D. transitional epithelium
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