Which one has the function of defense and protection A: Matrix B: Collagen fibril C: Collagen fiber D: Elastic fiber E: Reticular fiber

The<br/>main structural features of the wall of the large arteries are:() A: more elastic membrane and cartilage B: more elastic fibers and collagen fibers C: more elastic membrane and elastic fibers D: more elastic fibers and smooth muscle fibers E: more collagen fibers

Which of the following stain blue with H&E stain? A: Cytoplasm B: Mitochondria C: Nucleus D: Collagen fibers

Which of the following stain blue with H&amp;E stain? A: Cytoplasm B: Mitochondria C: Nucleus D: Collagen fibers

A person with chronic alcoholism has developed cirrhosis of the liver. The liver is filled with a type of collagen that interferes with appropriate liver function. Under these conditions, which liver cell type has been stimulated to produce fibril-producing collagen A: Kupffer cells B: Stellate cells C: Endothelial cells D: Hepatocytes E: Pit cells

细胞外基质的成分不包括 （ ）。 A: 表皮生长因子（EGF） B: 胶原蛋白（Collagen） C: 纤连蛋白（Fibronectin） D: 层粘连蛋白（Laminin）

Directions: Revise the following sentences where necessary. The purpose of this study was to investigate the phenomenon of tissue integration of porcine dermal collagen membrane (PDCM) in vivo.

鱼皮加热水煮后下列何者增加？（） A: 肌蛋白（myosin） B: 肌动蛋白（acyin） C: 明胶（gelatin） D: 胶蛋白（collagen）

Which of the following connective tissue components is located inthe ECM but not in the ground substance? A: Hyaluronan B: fibronectin C: Proteoglycans D: Collagen bundles E: GAGs

胶原（蛋白）（collagen）是动物结缔组织最丰富的一种蛋白质，它是由原胶原蛋白分子组成。原胶原蛋白是一种具有左手超螺旋结构的蛋白。每个原胶原分子都是由3条特殊的右手螺旋的多肽链左手旋转形成的。