Actual Exam 3 Flashcards
What are the four layers of the epidermis?
stratum basale, stratum spinosum, stratum granulosum, stratum lucidum
What cell types are in the stratum basale?
stem cells
What cell types are in the stratum spinosum?
dendritic cells
What type of cells are in the stratum granulosum?
contains cells that have dark-staining keratohyalin granules
What type of cells are in the stratum lucidum?
dead cells
What are the functions of the DERMIS, where is it located on the body?
connective tissue layer beneath the epidermis, houses hair follicles and nail roots, ranges from eyelids to palms/soles
What are the functions of the HYPODERMIS, where is it located on the body?
subcutaneous tissue, pads body and binds skin to underlying tissues. technically not part of the skin but the dermis does anchor to it.
Define melanin.
most significant factor in skin color, produced by melanocytes
What are the two forms of pigment that determine skin color?
eumelanin, phomelanin
What are the three parts of hair structure?
Bulb, Root, and shaft
Define pilus.
another name for hair
What are the four processes of losing hair?
Anagen (early), Anagen (mature), Catagen, and Telogen.
Mammary Glands
milk producing glands located in the breasts
Ceruminous Glands
glands of the ear canal that produce wax
Sudoriferous Glands
sweat glands
What is basal cell carcinoma?
most common type of skin cancer, least dangerous, forms in stratum basale
What is squamous cell carcinoma?
arises from keratinocytes of stratum spinosum
What is malignant melanoma?
arises from melanocytes, typically fatal
What level of the skin does a first degree burn effect?
only the epidermis
What level of the skin does a second degree burn effect?
involves part of the dermis