Disorders of the Integument cont. and Would Healing
ThClass Summary - Today students took a textbook quiz on wound healing. Then we started talking about wound healing. We talked about 3 different phases of wound healing; the inflammatory phase (fluids enter wound to create a scab and fight infection), the proliferative phase (where tissues enter and cell growth accelerates) and the remodeling phase which is scar formation and healing. Then we finished off the chapter talking about burns. 1st degree burns do not pass the epidermis and heal quickly with peeling skin. 2nd degree burns touch some of the dermis and blister. 3rd degree burns damage the dermis and the accessory organs in the dermis. 4th degree burns damage down to the bone. Burns are measured not only by depth but also by extent of the burn. We use the 'rule of 9s' to figure out what percentage of the body is affected by the burn. We talked about the purpose of the skin to maintain the body's homeostasis and also talked about the effects of aging on the integumentary system.
Homework - Test is scheduled for Friday.
Objectives - Students will identify symptoms of disorders of the integument. Students will know what happens in the three stages of wound healing. Students will name and describe four types of burns with regard to depth. Students will describe how the rule of 9s is used to estimate the extent of a burn. Students will describe changes that occur in the integumentary system when we age. Students will list and discuss the functions of the skin that contribute to homeostasis.