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Tissue Repair, Aging, and Disorders

Description
Tissue Repair

Tissue repair is the process that replaces worn out, damaged, or dead cells.
Epithelial cells are replaced by the division of stem cells or undifferentiated cells
Not all connective tissue cells have the ability to repair
Muscle cells can perform limited repair
Some nervous cells can perform limited repair, others cannot
Fibrosis is the formation of scar tissue

Aging

Younger bodies generally experience:
A better nutritional state
A better blood supply to tissues
A faster metabolic rate

Aging slows the process of tissue repair

Disorders

Disorders of epithelial tissues tend to be specific to individual organs
Skin cancer
Disorders of connective tissues tend to be autoimmune in nature
Lupus
Disorders of muscular and nervous tissues will be discussed in later chapters

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