Tissue - Repair

Question 1

Tissue repair requires

Answer 1

Cell migration initiate by growth factors (wound hormones) released by injured cells

Question 2

Repair depends on

Answer 2

• type of tissue damaged

* severity if injury

Question 3

Regeneration

Answer 3

Replacement of destroyed tissues w/ same kind of tissue

Question 4

Fibrosis

Answer 4

Scarring

Proliferation of fiberous connective scar tissue

Question 5

Steps of tissue repair

Answer 5

1) inflammatory
2) organization
3) regeneration/fibrosis

Question 6

Inflammatory stage (#1)

Answer 6

Chemicals cause capillaries to dislate & become permeable
White blood cells and protein leak into area
Clot forms
Scan forms when area is exposed to air

Question 7

Organization that restores blood supply (#2)

Answer 7

Temporary blood clot replaced by granulation tissue

Question 8

Regeneration/fibrosis effects permanent repair (#3)

Answer 8

Surface epithelium begins to regenerate & grow across granulation tissue beneath scab
Epithelium thickens to match surrounding tissue

Question 9

Granulation tissue

Answer 9

Delicate and pink
Composed of capillaries, macrophages, fibroblasts
Designed to become scar tissue

Question 10

Factors affecting repair process

Answer 10

Type of tissue injured
Type of injury & immediate care given
Nutrition
Adequacy of blood supply
State of health
Age