Med Sci-Inflammation and tissue repair

What is the characteristic feature of keloids?

• Excessive hair growth

• Decreased pigmentation

• Overgrowth of scar tissue

• Reduced blood flow

What happens in the process of phagocytosis?

• Phagocyte cells destroy foreign particles or dead cells.

• Phagocyte cells multiply foreign particles or dead cells.

• Phagocyte cells do not engulf foreign particles or dead cells.

• Phagocyte cells engulf and digest foreign particles or dead cells.

What is the role of selectin in the inflammation process?

• Regulate the migration of immune cells

• Increase the production of red blood cells

• Heal wounds

• Inhibit immune response

What is meant by chronic inflammation?

• inflammatory response that lasts for a long period of time

• A condition that only lasts for a few days

• Occurs suddenly without clear symptoms

• Does not affect overall health

What happens in the healing process?

• The healing process does not involve inflammation

• The healing process involves stages of inflammation, proliferation, and remodeling.

• The healing process only involves the proliferation stage

• Remodeling does not occur in the healing process

What mediator is involved in granulomatous inflammation?

• TGF-beta

• IL-1

• TNF-alpha

• IFN-gamma

What mediator is not associated with angiogenesis?

• VEGF

• FGF-2

• PDGF

• IL-4

What cells are release histamine?

• Eosinophils

• Lymphocytes

• Macrophages

• Mast cells

How does PECAM1 affect leukocyte migration?

• PECAM1 has no effect on leukocyte migration

• PECAM1 regulates transendothelial migration and leukocyte diapedesis.

• PECAM1 inhibits leukocyte migration

• PECAM1 promotes leukocyte adhesion

What is the main role of macrophages in the process of inflammation?

• Remove pathogens, dead cells, and foreign substances from tissues

• Reduce antibody production

• Destroy healthy cells in the body

• Enhance immune response to pathogens