Exam 4 Part 5 Flashcards
Healing of wounds involving the epidermis:
Results is greater mitotic activity in the stratum basale & stratum spinosum
Healing wound involving dermis/ or subcutaneous layer: Step 1
Wound causes rupture of blood vessels w/in the dermis (& subcutaneous layer if that deep) w/ resulting in bleeding
Healing wound involving dermis/ or subcutaneous layer: Step 2
Blood platelets & fibrinogen proteins form a clot, which stops bleeding
Healing wound involving dermis/ or subcutaneous layer: Step 3
Scab forms and seals off wound
T/F Along w/ scab forming you may see signs of inflammation as damaged cells & foreign microorganisms are destroyed by immune cells
True
Healing wound involving dermis/ or subcutaneous layer: Step 4
W/in dermis; fibroblasts form collagen fibers which binds wound edges together; w/in the epidermis, epithelial cells migrate in from wound edges & start proliferating
Healing wound involving dermis/ or subcutaneous layer: Step 5
Scab sloughs off when healing is nearly complete
- Injury of epidermis ONLY
- Skin becomes warm & reddened; surface layers of skin may be shed (peeling)
Frist degree burn
- Deconstruction of epidermis & some underlying dermis as well (but NOT accessory organs)
- Skin blisters & healing process will involve epithelial cells from the accessory organs w/in the damaged area
Second degree burn
With a second degree burn do you still have the hair follicle & exocrine ducts?
YES
- Destroys the epidermis, dermis, & accessory organs
- Epithelial healing can occur ONLY at the margins of injury
Third degree burn
- Destruction extends through ALL layers of the skin & perhaps into the underlying tissues
- Epithelial healing can occur ONLY at the margins of the injury
Fourth degree burn
Neoplasms can be:
Benign or malignant
Mole or a wart is considered a?
benign neoplasm
Benign growth of pigmented melanocytes
Mole (aka nevus)
