Integumentary Flashcards
What is the main organ of the the integumentary system
Your skin
What are the three layers?
Epidermidis dermis hypodermis
Which is the outer layer of skin?
Epidermidis
What kind of tissue does the epidermis contain?
Stratified squamous epithelial tissue
What do epidermis cells do as they age?
Move to the exterior surface flatten and are replaced
What are hair follicles?
The tube switch hair grow
What is the middle layer of skin called?
The dermis
What kind of tissue is the dermis?
Connective
What is avascular?
Lacks blood vessels
What is another name for the dermis?
Cutaneous layer
A cut deep enough to bleed hits the
Blood vessels of the dermis
Where is the hypodermis?
Deepest layer of skin
What is another word for hypodermis?
Subcutaneous
What kind of tissue is the hypodermis?
Loose connective adipose
What is below the hypodermis?
The muscle layer
What does the dermis contain?
Blood vessels, nerves sensory receptors, nails hair
Where does hair come from?
Epithelial cells at the base of hair follicles
Where does hair get its oil?
Sebaceous gland
Sebum combined with cernuminous glands and dead, epithelial cells forms
Earwax
Apocrine sweat gland is known as
Sex pheromone
Sweat is produced by
Eccrine sweat glands
What is the main role of sweat?
Regulation of body temperature
Functions of integumentary
Removes metabolic wastes synthesis vitamin d provides protection
Two ways of thermal regulation
Perspiration and diameter changes of blood vessels
What are thermal receptors?
Temperature sensors
Who did thermal receptors provide information to?
Hypothalamus
What does the hypothalamus use thermal receptors for?
Bodies thermostat
What does the hypothalamus do when the body temperature is too high?
Stimulates, cutaneous vasodilation
What is cutaneous vasodilation?
Increase in blood vessel diameter in the skin
What does the hypothalamus stimulate?
Sweat production
What traps particles that contain pathogens
Hair sweat, and cercumen
When epidermal sell shed what falls
Pathogenic microbes
What protects the body from dehydration
A tough protein made by epithelial keratinocytes
