Language :
SWEWE Member :Login |Registration
Search
Encyclopedia community |Encyclopedia Answers |Submit question |Vocabulary Knowledge |Upload knowledge
questions :granulation tissue
Visitor (14.182.*.*)
Category :[Natural][Other]
I have to answer [Visitor (44.192.*.*) | Login ]

Picture :
Type :[|jpg|gif|jpeg|png|] Byte :[<2000KB]
Language :
| Check code :
All answers [ 1 ]
[Visitor (112.0.*.*)]answers [Chinese ]Time :2022-09-25
Microscopic visualization of a large number of solid cell cords formed by endothelial cell proliferation and dilated capillaries, growing vertically to the wound, and with arterioles as the axis, forming a loop-like curved capillary network around it. There are many new fibroblasts around the capillaries, in addition to a large number of exudates and inflammatory cells. Inflammatory cells are often dominated by macrophages, and there are many neutrophils and lymphocytes in varying numbers, so granulation tissue has anti-infective function.
Macrophages secrete PDGF, FGF, TGF-β, IL-1 and TNF, plus platelets released by platelets during wound clotting to further stimulate fibroblasts and capillary hyperplasia. Macrophages and neutrophils can engulf bacteria and tissue fragments, these cells release a variety of proteolytic enzymes after destruction, can decompose necrotic tissue and fibrin, granuloma tissue capillary endothelial cells also have phagocytosis, and have a strong fibrinolytic effect.

Some fibroblasts in granulation tissue contain myofilaments in the cytoplasm, which in addition to fibroblast function, also has the function of smooth muscle cells, called myofibroblasts.
Search

版权申明 | 隐私权政策 | Copyright @2018 World encyclopedic knowledge