CHAPTER 12 Flashcards
What is the Integumentary system?
Yo skin, largest organ of the body, that fleshy good good
What are the layers of the skin called?
The Epidermis and Dermis
What is the outermost layer of the integumentary system?
The Epidermis
What is the stratum corneum?
The most superficial layer of the epidermis, restrics loss of fluids from internal tissue
What is the Dermis comprised of?
Connective tissue within a ground substance,
What does the connective tissue/ground substance in the Dermis do?
Connective:Maintains resting arrangement of collagen
Ground:Provides cushion against compression
What happens during the inflammatory phase?
It begins with vasoconstriction (stopping the blood flow to restrict bleeding) followed by vasodilation to i(ncrease flow of white blood cells._ Local Edema (swelling). may last about two weeks
What happens during the proliferative phase?
Collagen(scar tissue) is produced. Ground substance, and angiogenesis occur, wound contracts
What happens during the maturation phase?
It is called the remodelling phase. Normally there is balance between collagen
formation and dissolution, Influences scar formation
Excessive collagen forms abnormal scars!
* Keloid scar: extend beyond boundary of the wound; take
longer to mature
Scar contraction; if not managed can lead to scar
contracture
Lasts several months
What is wound healing?
wound healing is commonly described as three phases, inflammatory, proliferative, and remodelling
What is TBSA?
Total body surface area, the size of a wound
What is vascular compromise?
Loss of vascular flow to an arterial site, caused by pressure,
What is arterial insufficiency?
Loss of blood flow to an area
What is venous insufficiency?
Venous blood accumulates
What is a pressure ulcer?
Pressure on the integumentary system reduces blood flow and tissue dies.