Dead tissue意思

"Dead tissue" refers to cells or tissues that have lost their vitality and are no longer functioning or alive. This can occur due to various reasons, such as lack of oxygen, trauma, infection, or natural processes like aging or programmed cell death (apoptosis). Dead tissue is characterized by the cessation of cellular metabolism, the inability to respond to stimuli, and the eventual loss of structural integrity.

In medical contexts, dead tissue is often referred to as "necrotic tissue." Necrosis is the uncontrolled death of cells and tissues, as opposed to apoptosis, which is a controlled form of cell death. Necrotic tissue can lead to various complications, including infection, inflammation, and the release of harmful substances into the body.

Dead tissue is often visible in wounds or injuries, appearing discolored and lacking the normal texture and consistency of living tissue. In such cases, the removal of dead tissue is often necessary to promote healing and prevent further complications.