Dermis
What are the projections of dermis that interlock with projections from epidermis called?
Dermal Papillae
Which burn has dehydration and infection as the major concerns for a patient in intensive care?
Third degree burn
What is the inactive form of vitamin D that keratinocytes synthesize during sun exposure?
Vitamin D3 : cholecalciferol
How is temperature regulated in the integument via vasodilation?
Blood vessel diameter widens
more blood is close to the surface
which helps release excess heat
Describe the contents of the discharge that comes from a merocrine gland?
Discharge is sweat:
- 99% water
- 1% electrolytes, metabolites, waste
Function is to resist stress.
What burn reaches the epidermis, dermis, and hypodermis?
Third degree burn
Where in the body is Vitamin D3 converted to calcidiol?
The liver.
True or false: Keratinized cells grow from a follicle in the epidermis?
False; Keratinized cells grow from a follicle in the dermis.
Describe the contents of the discharge that comes from a apocrine gland?
Discharge is viscous, turbid due to containing proteins and lipids.
What are the functions of the dermal papillae?
1. Increase area of contact with epidermis
2. Supply nutrients to epidermis through capillaries
3. Contains nerve endings for touch
What are the seven(or as many as you can think of) functions of the integument?
1. Protection
2. Immune function
3. Prevent water loss or gain
4. Provide sensation
5. Metabolic Regulation(Ex: vitamin D production)
6. Secretion and absorption
7. Temperature Regulation
Where is calcitriol converted to in the body? What purpose does calcitriol do for the body particularly in the small intestine?
The kidney.
Calcitriol increases calcium and phosphate absorption in the small intestine.
What type of gland is a sweat gland?
Merocrine gland
Describe why there is an odor related to apocrine glands?
Discharge contains proteins and lipids that are acted upon by bacteria that live on the surface of our skin. Bacteria use proteins and lipids for food and they give off an odor.
What two tissues is the subcutaneous layer made of?
Areolar CT and Adipose CT
What immune cells have immunity protection for the integument?
Dendritic cells
What is the function of secretion and absorption in the integument?
It allows discharge of certain substances from the body and allows for absorption of certain chemicals and drugs taken via a transdermal administration.
What type of gland is a sebaceous gland?
Holocrine gland
What are the three functions of the subcutaneous layer?
1. Provide cushion and protect
2. For energy storage
3. Provide thermal insulation
How is temperature regulation controlled in the integument via vasoconstriction?
Blood vessel diameter narrows
Moves blood away from periphery
Helps conserve heat
True or false: Sweat glands are released via vesicular endocytosis?
False; released via exocytosis