Answer to Question 1
Eschar
Black, brown, or tan tissue in the wound is eschar that should be removed before wound healing can begin.
Answer to Question 2
healing ridge
The healing ridge is composed of newly formed collagen, and you can usually feel it along a healing wound. It is usually present directly under the suture line between days 5 and 9 . Lack of a ridge is cause for concern, and you will need to begin interventions promptly to reduce mechanical strain on the wound.