Integumentary System Flashcards
A primary function of ________ is absorption of calcium in the digestive tracts
Vitamin D
The __________ of the integumentary system allows for excretion and absorption through the skin while still providing protection from external environment
semi-permeable membrane
_________ in the dermal layer provide sensory perception close to the surface of the skin.
Free nerve endings
_________ is the main substance in the epidermis that protects from heat, microbes, and chemicals
Keratin
The tactile cells of the epidermal layer are called ______
Merkel cells (discs)
___________ produce pigment that absorbs UV light
Melanocytes
The five layers of epidermis are
Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
The stratum ________ is mainly found in the palms and soles of the feet.
Lucidum
Langerhans cells function to ________
provide immune response
The stratum basale consists of ________ layer(s) of cuboidal/columnar keratinocytes
One
Lamellar granules in the stratum _______ release a lipid-rich secretion to create semi-permeable protective barrier
granulosum
Psoriasis is a skin disorder in which keratinocytes _________
divide more quickly than normal and shed prematurely
The dermis consists of mainly ________ tissue
connective
Free nerve endings in the dermis that sense heat are thermoreceptors while those that sense pain are
nocireceptors
Hair root plexus functions to _________
sense when the associated hair is stimulated
The secretion ________ coats hair and keeps skin soft and pliable
sebum
_________ sudoriferous glands occur after pubescence.
Apocrine
Ear wax is secreted by _______ glands
ceruminous
The cellular response when migrating cells touch one another and stop migrating is known as ________
contact inhibition
List the ABCDE’s of malignant melanoma detection.
Asymmetry, Border (irregular), Color (uneven), Diameter (>0.25in), Elevation
In deep wound healing, __________ deposit collagen to strengthen the wound
fibroblasts
What is the most superficial layer of the skin?
Stratum corneum
Which of the following is not considered part of the skin - Epidermis, Dermis, Hypodermis?
Hypodermis
What is the deepest layer of the epidermis?
Stratum basale, germinativum
What condition is due to the buildup of the yellow pigment bilirubin in the skin?
Jaundice
What condition is the result of blood not picking up an adequate amount of oxygen that makes the skin appear bluish?
Cyanosis
What glands produce sweat?
Sudoriferous
What glands produce oil?
Sebacious
