SKIN Flashcards
(52 cards)
stratified squamous epithelium - can prevent loss of water.
Dehydration
protects us from entry of pathogens by keeping the skin healthy or unbroken.
Microbes
disease causing microbes
Pathogens
study of diseases.
Pathology
Healthy unbroken skin is always our (blank) of defense to prevent the entry of pathogens
First line
Sensory receptors detect heat, cold, touch, pressure, pain:
Sensation
are “NERVES” that recieves info and deliver to brain.
Sensory receptors
needed in calcium homeostasis.
Vit. D production
INFO
Sun don’t provides vit. D but rather UV rays only.
- Sun activates vit. D, calcium then will be absorbed easily which makes bones stronger.
FUNCTIONS OF THE INTEGUMENTARY SYSTEM
-protection
-UV
-sensation
-Microbes
-temperature regulation
-excretion
amount of blood flow and activity of sweat glands.
Temperature Regulation
Normal Temperature
37°c
Freezing point
0°c
(prevents blood from escaping to keep you warm from the surface.)
Colds
escapes to normalize body temperature / body heat from the surface:
Hot
INFO
Normal blush- low temperature
Rush of blood - cold
release waste products and through gland secretion.
Excretion
Eliminate
Excretion
Produce
Secretion
2 MAJOR TISSUE LAYERS OF THE SKIM
-EPIDERMIS
-DERMIS
layer of stratified squamous epithelium
- Prevents water loss (microbes, UV Rays).
-resist abrasion
- Keratinization.
-Forms strata/layers-5layers
(thinner layer made of 5 layers. Stratum singular)
- responsible for protection
AVASCULAR (without blood vessels)
Epidermis
deepest
S. Basale
Most superficial
S. Corneum
layer of dense connective tissue w/ fibroblast, fat cells, macrophages.
- Collagen and elastic fibers are responsible for most of the structural strength.
-Cleavage or tension lines.
- dermal papillae
-“TRUE SKIN”( thicker layer)
-has to do with the major functions. - nerve endings located
-with blood vessels
Dermis