Dermis Flashcards
Projections of the papillary layer
Dermal papillae
What indents into the epidermis and creates a wavy border
Dermal Papillae
Function of the dermal papillae/ papillary layer
House pain receptors and touch receptors
House fingerprints
Contain capillary loops
Function of the capillary loops
Provide nutrients to the epidermis
Deepest skin layer
Reticular
What does the reticular layer contain?
Blood vessels
Sweat and oil glands
Deep pressure receptors
Deep pressure receptors
Lamellar corpuscles
What does the dermis contain?
Collagen and elastic fibers
Blood vessels
Give skin it’s toughness
Collagen fibers
Give skin it’s elasticity
Elastic fibers
What is the role of blood vessels in the dermis?
Body temperature regulation
Yellow brown or black pigments
Melanin
Orange-yellow pigment from some vegetables
Carotene
Red coloring from blood cells in dermal capillaries
Hemoglobin
What determines the extent of red coloring
Oxygen content
Blood has escaped from circulation and clotted in tissue spaces
Bruises
Tissues where blood clots
Hematoma
Liver disorder
Jaundice
Yellowing
Jaundice
Blanching or pale
Pallor
Due to emotional stress such as fear, anemia, low blood pressure, impaired blood flow to an area
Pallor
Erythema
Redness
Due to embarrassment, inflammation, hypertension, fever, or allergy
Redness/erythema
When hemoglobin is poorly oxygenated, blood and skin of Caucasians appears blue
Cyanosis
When is cyanosis common?
Heart failure or severe breathing disorders
Where is cyanosis in African Americans common
Mucous membranes and nail beds
Upper dermal region
Papillary
