Test 2 Flashcards
(139 cards)
Integumentary
the skin and its accessory structures
cutaneous membrane
also called Skin; composed of several tissue types
2 layers of skin
epidermis and dermis
Epidermis
avascular; outer layer composed of keratinized stratified squamous epithelium
structure between epidermis and dermis
Basement membrane
Dermis
- inner layer; consist of two layers: papillary layer and reticular layer
reticular
dense irregular connective tissue, deepest layer of dermis and skin
papillary layer
(areolar connective tissue, location of dermis papillae)
hypodermis
Subcutaneous layer, made of areolar and adipose
Keratinocytes- cell that makes keratin
all humans have the same number
Keratinization
process of keratin being produced by keratinocytes and then the cells with keratin migrate upward toward the surface
Keratin
protein that prevents water loss and protects other organisms from coming in
Stratum basale
Deepest layer of epidermis
Stratum corneum
most superficial layer
Stratum lucidum
found in thick skin only
Which part of body has five layers of skin?
palmer, plantar
How many layers of skin are found on the rest of your body?
four
Tactile(merkel) cells
used to detect light touch
Melanocytes
produce a pigment melanin; side effect no vitamin d
What controls how much melanin is produced?
Genes
Carotene
yellow to orange; depend on food
Hemoglobin
pinkish hue; blood protein
Albino
lack melanin; white
Cyanosis
bluish appearance; lack oxygen